{"id":133594,"date":"2025-08-15T06:40:13","date_gmt":"2025-08-15T10:40:13","guid":{"rendered":"https:\/\/pureinfotech.com\/?p=133594"},"modified":"2025-08-15T10:04:12","modified_gmt":"2025-08-15T14:04:12","slug":"know-why-windows-11-cant-run-pc","status":"publish","type":"post","link":"https:\/\/pureinfotech.com\/know-why-windows-11-cant-run-pc\/","title":{"rendered":"How to check (exactly) why your PC can&#8217;t run Windows 11"},"content":{"rendered":"<ul class=\"sum\">\n<li>If your computer meets the Windows 11 hardware requirements but still won&#8217;t upgrade, you can use the <strong>WhyNotWin11<\/strong> tool to find out why.<\/li>\n<li>This third-party app checks your processor, memory, storage, TPM 2.0, Secure Boot, and other specs to pinpoint compatibility issues.<\/li>\n<li>Components that fail are marked in red, parts that are supported but possible in yellow, and fully compatible hardware in green.<\/li>\n<\/ul>\n<p>If your <a href=\"https:\/\/pureinfotech.com\/tag\/windows-10\">Windows 10<\/a> computer meets the basic specs but still can&#8217;t upgrade to Windows 11, the problem might be specific hardware blocks. Microsoft raised the <a href=\"https:\/\/pureinfotech.com\/windows-11-system-requirements\/\">minimum requirements<\/a> significantly for <a href=\"https:\/\/pureinfotech.com\/tag\/windows-11\">Windows 11<\/a>, including support for Secure Boot, TPM 2.0, and newer processors, and many older PCs <a href=\"https:\/\/www.reddit.com\/r\/WindowsHelp\/comments\/1mpg25p\/windows_11_will_but_wont_be_allowed\/\" target=\"_blank\" rel=\"noopener\">can&#8217;t upgrade<\/a> without knowing the exact reason.<\/p>\n<p>That&#8217;s where <strong>WhyNotWin11<\/strong> comes in. This is a free, third-party tool by Robert C. Maehl on GitHub that runs a deep compatibility check. Unlike Microsoft&#8217;s <a href=\"https:\/\/pureinfotech.com\/check-if-pc-hardware-compatible-with-windows-11\/\">PC Health Check<\/a> app, which only shows a yes or no result, WhyNotWin11 lists every hardware component and clearly marks which ones pass or fail.<\/p>\n<p>The tool analyzes:<\/p>\n<ul>\n<li>Processor model (must be on <a href=\"https:\/\/learn.microsoft.com\/en-us\/windows-hardware\/design\/minimum\/windows-processor-requirements\" target=\"_blank\" rel=\"noopener\">Microsoft&#8217;s supported CPU list<\/a>).<\/li>\n<li>TPM version (must be TPM 2.0).<\/li>\n<li>Secure Boot (must be enabled).<\/li>\n<li>RAM and storage capacity.<\/li>\n<li>DirectX and WDDM version.<\/li>\n<\/ul>\n<p><strong>Green<\/strong> means compatible, <strong>red<\/strong> means blocked, and <strong>yellow<\/strong> means unsupported but may still work.<\/p>\n<p>In this <a href=\"https:\/\/pureinfotech.com\/tag\/how-to\">guide<\/a>, I&#8217;ll outline the steps to use the WhyNotWin11 tool to know exactly why your computer won&#8217;t run Windows 11.<\/p>\n<h2>Check why your PC can&#8217;t run Windows 11<\/h2>\n<p>To know exactly why your computer cannot install and run Windows 11, follow these steps:<\/p>\n<ol>\n<li>\n<p><a href=\"https:\/\/github.com\/rcmaehl\/WhyNotWin11\/releases\" target=\"_blank\" rel=\"noopener\">Open the <strong>WhyNotWin11<\/strong> GitHub page<\/a>.<\/p>\n<\/li>\n<li>\n<p>Click the <strong>Download here<\/strong> button to save the tool on your device.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-179937\" src=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/download-whynotwin11.webp?resize=818%2C433&#038;quality=78&#038;strip=all&#038;ssl=1\" alt=\"WhyNotWin11 download\" width=\"818\" height=\"433\" srcset=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/download-whynotwin11.webp?w=818&amp;quality=78&amp;strip=all&amp;ssl=1 818w, https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/download-whynotwin11.webp?resize=300%2C159&amp;quality=78&amp;strip=all&amp;ssl=1 300w, https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/download-whynotwin11.webp?resize=150%2C79&amp;quality=78&amp;strip=all&amp;ssl=1 150w\" sizes=\"auto, (max-width: 818px) 100vw, 818px\" \/><\/p>\n<div id=\"tip-box\"><span><strong>Quick note:<\/strong> If the browser blocks the download, you will need to force it to keep the file.<\/span><\/div>\n<\/li>\n<li>\n<p>Right-click the <strong>WhyNotWin11.exe<\/strong> file and select the <strong>Run as administrator<\/strong> option.<\/p>\n<\/li>\n<li>\n<p>Click the <strong>More info<\/strong> link in the warning and click the <strong>Run anyway<\/strong> button.<\/p>\n<\/li>\n<li>\n<p>Confirm the reason why Windows 11 can&#8217;t run on your computer.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-179938\" src=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/whynotwin11-windows11-compatibility-check_.webp?resize=802%2C602&#038;quality=78&#038;strip=all&#038;ssl=1\" alt=\"Windows 11 compatibility check\" width=\"802\" height=\"602\" srcset=\"https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/whynotwin11-windows11-compatibility-check_.webp?w=802&amp;quality=78&amp;strip=all&amp;ssl=1 802w, https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/whynotwin11-windows11-compatibility-check_.webp?resize=300%2C225&amp;quality=78&amp;strip=all&amp;ssl=1 300w, https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/whynotwin11-windows11-compatibility-check_.webp?resize=765%2C574&amp;quality=78&amp;strip=all&amp;ssl=1 765w, https:\/\/i0.wp.com\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/whynotwin11-windows11-compatibility-check_.webp?resize=150%2C113&amp;quality=78&amp;strip=all&amp;ssl=1 150w\" sizes=\"auto, (max-width: 802px) 100vw, 802px\" \/><\/li>\n<\/ol>\n<p>Once you complete the steps, the tool will run automatically and clearly let you know whether the processor, memory, storage, and other requirements like Secure Boot, TPM, and DirectX are compatible with Windows 11.<\/p>\n<p>The components that are not supported and will prevent you from upgrading to the new version of the operating system will be marked in red. The hardware that won&#8217;t block the installation will be marked in green. And you may also see components, such as the processor, with a yellow mark, which indicates that the hardware is not in the compatibility list, but you may still be able to proceed with the install.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Find out exactly why your PC can\u2019t run Windows 11 using the WhyNotWin11 tool.<\/p>\n","protected":false},"author":2,"featured_media":179940,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1758,23],"tags":[95,19,2715,2576],"class_list":["post-133594","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apps","category-windows","tag-difficulty-level-beginner","tag-how-to","tag-windows-11","tag-windows-help"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to check (exactly) why your PC can&#039;t run Windows 11 - Pureinfotech<\/title>\n<meta name=\"description\" content=\"WhyNotWin11 is better than the Microsoft PC Health Check app to tell you why your PC can&#039;t run Windows 11, including TPM 2.0 and CPU support.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pureinfotech.com\/know-why-windows-11-cant-run-pc\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Here\u2019s why your PC can\u2019t run Windows 11\" \/>\n<meta property=\"og:description\" content=\"Not sure why your PC can\u2019t run Windows 11? Use the WhyNotWin11 tool to pinpoint the exact hardware blocking the upgrade.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pureinfotech.com\/know-why-windows-11-cant-run-pc\/\" \/>\n<meta property=\"og:site_name\" content=\"Pureinfotech \u2022 Windows 10 &amp; Windows 11 help for humans\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/pureinfotech\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-15T10:40:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-15T14:04:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/pureinfotech.com\/wp-content\/uploads\/2021\/06\/whynotwin11-windows-11-checker-hero.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1680\" \/>\n\t<meta property=\"og:image:height\" content=\"1050\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Mauro Huculak\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Find out exactly what\u2019s blocking your Windows 11 upgrade\" \/>\n<meta name=\"twitter:description\" content=\"Not sure why your PC can\u2019t run Windows 11? 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