{"id":14155,"date":"2021-10-21T17:02:25","date_gmt":"2021-10-21T15:02:25","guid":{"rendered":"https:\/\/g100.us\/?p=14155"},"modified":"2022-12-13T15:54:57","modified_gmt":"2022-12-13T14:54:57","slug":"fixing-cpu-fan-error","status":"publish","type":"post","link":"https:\/\/g100.us\/fixing-cpu-fan-error\/","title":{"rendered":"How to Fix the &#8220;CPU Fan Error!&#8221; Message"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_39 counter-hierarchy ez-toc-counter ez-toc-container-direction\">\n<p class=\"ez-toc-title\">TABLE OF CONTENTS<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-668440a940226\" class=\"cssicon\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><svg style=\"fill: #7f11e0;color:#7f11e0\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\" \/><\/svg><svg style=\"fill: #7f11e0;color:#7f11e0\" class=\"arrow-unsorted-368013\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\" \/><\/svg><\/span><\/label><label for=\"ez-toc-cssicon-toggle-item-668440a940226\" class=\"cssiconcheckbox\">1<\/label><input type=\"checkbox\" id=\"ez-toc-cssicon-toggle-item-668440a940226\" checked><nav><ul class=\"ez-toc-list ez-toc-list-level-1 \"><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#What_Does_the_CPU_Fan_Error_Message_Mean\" title=\"What Does the \u201cCPU Fan Error\u201d Message Mean?\">What Does the \u201cCPU Fan Error\u201d Message Mean?<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#Possible_Causes_How_to_Fix_CPU_Fan_Error\" title=\"Possible Causes &amp; How to Fix \u201cCPU Fan Error\u201d\">Possible Causes &amp; How to Fix \u201cCPU Fan Error\u201d<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#CPU_Fan_Not_Properly_Plugged_In\" title=\"CPU Fan Not Properly Plugged In\">CPU Fan Not Properly Plugged In<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#AIO_Pump_Installed_into_the_CPU_Fan_Header\" title=\"AIO Pump Installed into the CPU Fan Header\">AIO Pump Installed into the CPU Fan Header<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#Low_CPU_Fan_RPM\" title=\"Low CPU Fan RPM\">Low CPU Fan RPM<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#BIOS_Not_Properly_Updated\" title=\"BIOS Not Properly Updated\">BIOS Not Properly Updated<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#CPU_Overheating\" title=\"CPU Overheating\">CPU Overheating<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#Rare_Cases\" title=\"Rare Cases\">Rare Cases<\/a><ul class=\"ez-toc-list-level-3\"><li class=\"ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#Failure_of_CPU_Cooler\" title=\"Failure of CPU Cooler\">Failure of CPU Cooler<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#CPU_Fan_DOA\" title=\"CPU Fan DOA\">CPU Fan DOA<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-2\"><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/g100.us\/fixing-cpu-fan-error\/#Over_to_You\" title=\"Over to You\">Over to You<\/a><\/li><\/ul><\/nav><\/div>\n<p>\u201cCPU Fan Error!\u201d - is being displayed on your monitor, and your PC won't boot?<\/p>\n<p>Nothing is more frustrating than turning on your PC only to be shown a cryptic error message that hinders you from getting some work (or fun) done.<\/p>\n<p>Sometimes the error is easy to decipher and quick to fix, but most often, you\u2019ll be left to manually copy-paste it into Google Search to see what the heck is going on.<\/p>\n<p>The <a href=\"https:\/\/g100.us\/asus-motherboard-error-codes\/\">CPU Fan Error encountered on Motherboards from ASUS<\/a> and other Brands somewhat falls into both of these categories - it seems obvious what's causing it to appear, but the fix isn't quite as straightforward in some cases.<\/p>\n<p>In fact, even if your CPU cooler is plugged in and operating properly, you may still receive this error.<\/p>\n<p>But worry not!<\/p>\n<p>In this article, we will go through the most common scenarios that may be causing the error and provide instructions on how to fix each one.<\/p>\n<p>We will also go through the types of cases where a simple fix won\u2019t be possible and what that means for you going forward.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Does_the_CPU_Fan_Error_Message_Mean\"><\/span>What Does the \u201cCPU Fan Error\u201d Message Mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>On a very basic level, the CPU Fan Error Message is the motherboard\u2019s way of telling you that it does not detect a cooling device for your CPU.<\/p>\n<p>And because <a href=\"https:\/\/g100.us\/do-you-need-a-cpu-cooler\/\">running a CPU without a cooler<\/a> is a good way to destroy the integrity of your processor, the motherboard prevents the PC from booting.<\/p>\n<p>It\u2019s a useful safety measure from your motherboard to keep your CPU from overheating.<\/p>\n<p>It ensures that unsuspecting PC Builders don\u2019t accidentally cause irreparable damage to their hardware.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Possible_Causes_How_to_Fix_CPU_Fan_Error\"><\/span>Possible Causes &amp; How to Fix \u201cCPU Fan Error\u201d<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Now that we have a general idea of what the CPU Fan Error means let\u2019s take a look at some of the most common causes.<\/p>\n<p>Spoiler alert: A couple of these reasons do, in fact, cause the error to appear despite a <a href=\"https:\/\/g100.us\/system-fan-vs-cpu-fan-headers\/\">CPU fan being plugged into the proper fan header<\/a>, so the obvious answer may not always be the correct one.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"CPU_Fan_Not_Properly_Plugged_In\"><\/span>CPU Fan Not Properly Plugged In<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The most common way to trigger this error is not having a fan plugged into the <a href=\"https:\/\/g100.us\/cpu-fan-vs-cpu-opt\/\"><strong>CPU_FAN header<\/strong><\/a> on the motherboard (Or it\u2019s not plugged in correctly).<\/p>\n<p><noscript><img decoding=\"async\" class=\"alignnone size-full wp-image-14288\" src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan.jpg\" alt=\"Installing the CPU Fan\" width=\"2048\" height=\"1080\" srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan.jpg 2048w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-300x158.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-1024x540.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-768x405.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-1536x810.jpg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\"><\/noscript><img decoding=\"async\" class=\"alignnone size-full wp-image-14288 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%202048%201080%22%3E%3C%2Fsvg%3E\" alt=\"Installing the CPU Fan\" width=\"2048\" height=\"1080\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%202048%201080%22%3E%3C%2Fsvg%3E 2048w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" data-srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan.jpg 2048w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-300x158.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-1024x540.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-768x405.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan-1536x810.jpg 1536w\" data-src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-CPU-Fan.jpg\"><\/p>\n<p>This means that even if you <em>do<\/em> have your CPU cooler\u2019s fan plugged into another Fan Header, such as <strong>SYS_FAN <\/strong>(System Fan) or <strong>CHA_FAN <\/strong>(Chassis Fan), as long as you don\u2019t have any fan plugged into the <strong>CPU_FAN <\/strong>header, you\u2019ll be getting this error message.<\/p>\n<h4>Fix<\/h4>\n<p>Ensure the CPU Cooler is properly installed onto the motherboard (backplate, screws, thermal paste, heat-Spreader cover removed, etc., depending on your CPU Cooler) \u2013 and that the CPU cooler\u2019s fan is specifically plugged into the <strong>CPU_FAN <\/strong>header.<\/p>\n<p>Note that in some cases you may not receive the error, despite not having the fan plugged into the proper header.<\/p>\n<p>Still, the error may eventually appear and be the cause for your PC\u2019s inability to boot and a great deal of confusion.<\/p>\n<p>Consult your Motherboard Manual or read the small text printed directly onto your Motherboard to find the <strong>CPU_FAN <\/strong>Header.<\/p>\n<p>It\u2019s usually positioned at the top right, next to the CPU\u2019s Socket.<\/p>\n<p>Circled in Red in the Image below are the CPU_FAN (left) and CPU_OPT (right) Headers on an MSI Unify Motherboard. Because they are usually placed close together, be sure you use the correct one.<\/p>\n<div id=\"attachment_12128\" style=\"width: 1200px\" class=\"wp-caption alignnone\"><noscript><img aria-describedby=\"caption-attachment-12128\" decoding=\"async\" class=\"size-full wp-image-12128\" src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter.jpg\" alt=\"Typical CPU FAN Header Position on a modern Motherboard\" width=\"1200\" height=\"675\" srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter.jpg 1200w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-300x169.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-1024x576.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-768x432.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-825x464.jpg 825w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-594x335.jpg 594w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-420x236.jpg 420w\" sizes=\"(max-width: 767px) 100vw, (max-width: 960px) 60vw, 707px\"><\/noscript><img aria-describedby=\"caption-attachment-12128\" decoding=\"async\" class=\"size-full wp-image-12128 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201200%20675%22%3E%3C%2Fsvg%3E\" alt=\"Typical CPU FAN Header Position on a modern Motherboard\" width=\"1200\" height=\"675\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%201200%20675%22%3E%3C%2Fsvg%3E 1200w\" sizes=\"(max-width: 767px) 100vw, (max-width: 960px) 60vw, 707px\" data-srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter.jpg 1200w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-300x169.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-1024x576.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-768x432.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-825x464.jpg 825w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-594x335.jpg 594w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter-420x236.jpg 420w\" data-src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/01\/CPU-Fan-vs-CPU-Opt-Twitter.jpg\"><p id=\"caption-attachment-12128\" class=\"wp-caption-text\">Typical CPU FAN Header Position on a modern Motherboard - Image-Credit: <a href=\"https:\/\/www.msi.com\/Motherboard\/MEG-X570-UNIFY\" target=\"_blank\" rel=\"noopener\">MSI<\/a><\/p><\/div>\n<h3><span class=\"ez-toc-section\" id=\"AIO_Pump_Installed_into_the_CPU_Fan_Header\"><\/span>AIO Pump Installed into the CPU Fan Header<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If you plan to cool your CPU with an <a href=\"https:\/\/g100.us\/air-vs-aio-coolers\/\">AIO liquid cooler instead of an air cooler<\/a>, you will want to have a radiator fan \u2013 or even a case fan \u2013 connected to the CPU_FAN header.<\/p>\n<p><noscript><img decoding=\"async\" class=\"alignnone size-full wp-image-14289\" src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO.jpg\" alt=\"Installing the AIO\" width=\"2048\" height=\"1080\" srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO.jpg 2048w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-300x158.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-1024x540.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-768x405.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-1536x810.jpg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\"><\/noscript><img decoding=\"async\" class=\"alignnone size-full wp-image-14289 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%202048%201080%22%3E%3C%2Fsvg%3E\" alt=\"Installing the AIO\" width=\"2048\" height=\"1080\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%202048%201080%22%3E%3C%2Fsvg%3E 2048w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" data-srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO.jpg 2048w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-300x158.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-1024x540.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-768x405.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO-1536x810.jpg 1536w\" data-src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/Installing-the-AIO.jpg\"><\/p>\n<p>This way, the motherboard can detect that a fan is present and the CPU is safe from overheating.<\/p>\n<h4>Fix<\/h4>\n<p>A common mistake when installing an AIO liquid CPU cooler is not plugging the pump into the proper <strong>AIO_PUMP<\/strong> header or not connecting a fan to the <strong>CPU_FAN<\/strong> header.<\/p>\n<p>Thankfully, this is a very quick and simple fix that can be done by <a href=\"https:\/\/g100.us\/connect-aio-pump\/\">properly connecting the AIO pump to the motherboard<\/a>.<\/p>\n<p>Plug the Pump into <strong>AIO_PUMP<\/strong> and the AIO Radiator Fans into <strong>CPU_FAN &amp; CPU_OPT<\/strong>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Low_CPU_Fan_RPM\"><\/span>Low CPU Fan RPM<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>According to <a href=\"https:\/\/www.asus.com\/us\/support\/FAQ\/1006064\/\" target=\"_blank\" rel=\"noopener\">ASUS\u2019s website<\/a> on the topic, having a CPU fan with a slow-spinning Fan or a Fan that stops completely at low temperatures due to Q-Fan Control (measured in Rotations Per Minute: RPM) may cause the motherboard not to be able to detect it properly.<\/p>\n<p>This means that you\u2019ll see the CPU Fan Error, despite having a fully functional CPU cooler that is properly installed and connected to the motherboard and which will ramp up when the CPU temperature increases.<\/p>\n<h4>Fix<\/h4>\n<p>To alleviate the issue, you will need to reduce the \u201cCPU Fan Speed Low Limit\u201d option <a href=\"https:\/\/g100.us\/how-to-enter-bios\/\">in the BIOS<\/a>.<\/p>\n<p>You can find this option by going to the \u201cMonitor\u201d tab, then to the \u201cQ-Fan Configuration,\u201d and then under \u201cQ-Fan Tuning\u201d where you\u2019ll see &#8220;<a href=\"https:\/\/g100.us\/cpu-fan-rpm-guide\/\">CPU Fan Speed<\/a> Lower Limit Option&#8221;.<\/p>\n<p>Reducing the limit to 200 RPM should fix the issue, but if you want to be safe, you can also set it to \u201cIgnore\u201d.<\/p>\n<div id=\"attachment_14180\" style=\"width: 831px\" class=\"wp-caption alignnone\"><noscript><img aria-describedby=\"caption-attachment-14180\" decoding=\"async\" class=\"size-full wp-image-14180\" src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31.jpg\" alt=\"Setting the Low Limit RPM in BIOS\" width=\"831\" height=\"602\" srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31.jpg 831w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31-300x217.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31-768x556.jpg 768w\" sizes=\"(max-width: 831px) 100vw, 831px\"><\/noscript><img aria-describedby=\"caption-attachment-14180\" decoding=\"async\" class=\"size-full wp-image-14180 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20831%20602%22%3E%3C%2Fsvg%3E\" alt=\"Setting the Low Limit RPM in BIOS\" width=\"831\" height=\"602\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20831%20602%22%3E%3C%2Fsvg%3E 831w\" sizes=\"(max-width: 831px) 100vw, 831px\" data-srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31.jpg 831w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31-300x217.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31-768x556.jpg 768w\" data-src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/low-limit-cpu-fan-31.jpg\"><p id=\"caption-attachment-14180\" class=\"wp-caption-text\">Setting the Low Limit RPM in BIOS<\/p><\/div>\n<h3><span class=\"ez-toc-section\" id=\"BIOS_Not_Properly_Updated\"><\/span>BIOS Not Properly Updated<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Another issue that ASUS states can be causing the error to appear, oddly enough, is not having the newest BIOS version installed.<\/p>\n<p>Of course, it won\u2019t be the first time a missing BIOS update causes a component to disappear, but it's strange nonetheless.<\/p>\n<p>Still, it\u2019s always a good idea to ensure your BIOS is up to date, and ASUS and <a href=\"https:\/\/g100.us\/best-motherboard-brands\/\">other Motherboard Manufacturers<\/a> have various <a href=\"https:\/\/g100.us\/update-bios-without-cpu\/\">EZ Update functions<\/a> to help you with that.<\/p>\n<h4>Fix<\/h4>\n<p>Update the BIOS either via an EZ Flash Update (if your motherboard supports this feature), or via an internet connection.<\/p>\n<p>You can find ASUS\u2019s instructions on how to do so <a href=\"https:\/\/www.asus.com\/support\/faq\/1008279\/\" target=\"_blank\" rel=\"noopener\">in this link<\/a>, but this <a href=\"https:\/\/bytespeed.com\/how-to-update-asus-motherboard\/\" target=\"_blank\" rel=\"noopener\">ByteSpeed article<\/a> also walks you through the process using some additional visual elements.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"CPU_Overheating\"><\/span>CPU Overheating<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If your CPU is not receiving sufficient cooling \u2013 either due to the CPU cooler being insufficient <a href=\"https:\/\/g100.us\/overclocking-reduce-cpu-gpu-lifespan\/\">or the CPU being overclocked<\/a> \u2013 it may cause the motherboard to trigger the CPU Fan Error.<\/p>\n<p><noscript><img decoding=\"async\" class=\"alignnone size-full wp-image-14290\" src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat.jpg\" alt=\"What can cause a CPU to Overheat\" width=\"2048\" height=\"1080\" srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat.jpg 2048w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-300x158.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-1024x540.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-768x405.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-1536x810.jpg 1536w\" sizes=\"(max-width: 2048px) 100vw, 2048px\"><\/noscript><img decoding=\"async\" class=\"alignnone size-full wp-image-14290 lazyload\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%202048%201080%22%3E%3C%2Fsvg%3E\" alt=\"What can cause a CPU to Overheat\" width=\"2048\" height=\"1080\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%202048%201080%22%3E%3C%2Fsvg%3E 2048w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" data-srcset=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat.jpg 2048w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-300x158.jpg 300w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-1024x540.jpg 1024w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-768x405.jpg 768w, https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat-1536x810.jpg 1536w\" data-src=\"https:\/\/g100.us\/wp-content\/uploads\/media\/2021\/10\/What-can-cause-a-CPU-to-Overheat.jpg\"><\/p>\n<p>This is done purely as a precautionary measure and should be taken as a warning by the system.<\/p>\n<h4>Fix<\/h4>\n<p>There are many ways you can attempt to fix this issue, but firstly, make sure you don\u2019t have any overclock settings still in place or remove them if they are present.<\/p>\n<p>Next, check to see that your CPU cooler\u2019s fan is functioning and that it is not overburdened by dust or other obstructions. Here's <a href=\"https:\/\/g100.us\/how-to-clean-dust-from-your-pc\/\">how to clean dust from your PC<\/a> (..which should be done regularly).<\/p>\n<p>If you are using an AIO cooler, ensure that you don\u2019t have any minor coolant leaks that may be the root of the overheating issues.<\/p>\n<p>You may also want to replace the thermal paste between your CPU and the cooler, especially if the thermal paste has been in use for over two-to-three years.<\/p>\n<p>You can find our article detailing how long thermal compounds last and how to replace them in the <a href=\"https:\/\/g100.us\/how-long-does-thermal-paste-last\/\">following link<\/a>.<\/p>\n<p>Also, make sure you have removed any Plastic Covers that might be pasted onto the underside of your new CPU Cooler by the manufacturer.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Rare_Cases\"><\/span>Rare Cases<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If none of the above helped resolve the error, there might be a manufacturing fault in one of the components.<\/p>\n<p>As much as we\u2019d hate to be the bearer of bad news, the truth of the matter is that such faults <em>do<\/em> occur but are extremely rare.<\/p>\n<p>Any mechanical or electrical parts will always be prone to inheriting defects from the manufacturing process or degrade through prolonged use.<\/p>\n<p>As a temporary measure, you can try plugging in a Case Fan into the CPU_FAN Header just to narrow down the possibilities of what might be the root of the cause.<\/p>\n<p>Don\u2019t boot into your System in this configuration, though.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Failure_of_CPU_Cooler\"><\/span>Failure of CPU Cooler<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Whether it's oxidation caused by liquid damage, an AIO pump failing, or a cooler fan spontaneously failing, there are many ways a CPU cooler can cease to function.<\/p>\n<p>Of course, for an air cooler the fix is quite simple: just order a replacement fan, but for an AIO liquid cooler, you may need to contact the manufacturer for a replacement.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"CPU_Fan_DOA\"><\/span>CPU Fan DOA<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>To some unlucky few, the CPU cooler\u2019s fan may be Dead On Arrival (DOA).<\/p>\n<p>You will have to contact the vendor to request an RMA (Return Merchandise Authorization).<\/p>\n<p>Of course, this is one of the most disappointing things you can encounter when building a new PC, but the chances of it happening twice are slim, so there's some solace in that.<\/p>\n<p>To make sure the CPU cooler fan is indeed DOA, try plugging a different fan into the CPU_FAN header and make sure it boots properly.<\/p>\n<p>Don\u2019t use the PC in this configuration, though, as the CPU will not be cooled properly.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Other than the rare occurrences of a cooling component failing or being received dead on arrival, a Motherboard's CPU fan error shouldn\u2019t be too difficult to figure out.<\/p>\n<p>This error simply tells you that your Motherboard does not detect a CPU Fan.<\/p>\n<p>If your BIOS is up to date and your air or AIO cooler is installed properly, then I'm confident you'll fix it in no time.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Over_to_You\"><\/span>Over to You<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Have you been receiving the CPU fan error message? Did any of the above steps help? Let us know in the <a href=\"#comments\">comments<\/a> below! <\/strong><\/p>\n<p><strong>If you want to see if other users are also experiencing similar PC-related issues, you can always visit our <a href=\"https:\/\/g100.us\/forum\/\">expert forum<\/a> as well.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u201cCPU Fan Error!\u201d - is being displayed on your monitor, and your PC won't boot? Nothing is more frustrating than turning on your PC only to be shown a cryptic error message that hinders you from getting some work (or fun) done. Sometimes the error is easy to decipher and quick to fix, but most...<\/p>\n","protected":false},"author":2343,"featured_media":14175,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[303],"tags":[273,175,117],"acf":[],"_links":{"self":[{"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/posts\/14155"}],"collection":[{"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/users\/2343"}],"replies":[{"embeddable":true,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/comments?post=14155"}],"version-history":[{"count":20,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/posts\/14155\/revisions"}],"predecessor-version":[{"id":21091,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/posts\/14155\/revisions\/21091"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/media\/14175"}],"wp:attachment":[{"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/media?parent=14155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/categories?post=14155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/g100.us\/wp-json\/wp\/v2\/tags?post=14155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}