Fix “Your PC’s CPU isn’t compatible with Windows 8/10” Error

Be able to install it on these machines

I’ve installed Windows 8/Windows 10 on a couple of machines lately to play around with it and it has installed without a problem on all machines except one. On an olderDell computerthat I have, I get the following error message during setup:

I was pretty sure that Windows 8 could be installed on the computer after looking up the Windows 8 system requirements, so I was surprised to see this message. You can also get this message when installing Windows 10. If you check the following links, you’ll see the basic RAM, CPU requirements for Windows 8 & 10:

https://www.microsoft.com/en-us/windows/windows-10-specifications

https://support.microsoft.com/en-us/help/12660/windows-8-system-requirements

Unfortunately, these do not go into super specific details about the requirements, which was why I couldn’t figure out why I was getting this error on my Dell. So here’s what my problem was and what you need to do to fix it so that you can install Windows 8 and Windows 10 without any issues.

CPU Features

So in order to install Windows 8 or Windows 10, the CPU on your machine needs to support the following features:

Now by default, most modern CPUs support these features and it’s not an issue. If you are getting this error, it’s mostly likely that NX is not enabled in your BIOS. To learn how to figure out if your system supports NX and SSE2, check out this whitepaper by Microsoft:

http://msdn.microsoft.com/en-us/library/windows/hardware/hh975398.aspx

Also, it goes through some steps to show you how to enable NX if your system does support it. Basically, though, you have to go to your BIOS and browse through some of the advanced pages until you find something related to the following:

The NX feature can have several names as listed above and depending on your system, it could be something different. The best option here is to download the spec sheet for your computer or motherboard, if you can find it and search for NX in the manuals. Note that if you don’t even see any of these options, it may be because your BIOS needs to be updated. If you have an older computer and you haven’t updated the BIOS in a while, then the first thing to do is update it.

For myDell, I had to update the BIOS to the latest version, then enable NX in the settings and everything worked fine after that. I was able to install Windows 8/Windows 10 without a problem.

Boot From USB/DVD

The only workaround that officially works if you do not have NX enabled is to burn the ISO image onto a DVD or create a bootable USB flash drive and then boot from the DVD or flash drive. There are two installers in Windows 8, the consumer one and the commercial one. One is in the root of the DVD and the other is in /sources directory. When you boot using the DVD or flash drive, the commercial installer runs and therefore does not check for NX and SSE2.

Note that this is only with the release preview. This is probably not going to be how it works when Windows 8 is finally released. At that point, if you get a blue screen during the install, your CPU is simply too old and won’t be able to run Windows 8. If your CPU doesn’t support NX altogether, then it won’t install either way.

If you are trying to upgrade the Consumer Preview to the Release Preview, you may also get this error. In this case, you should simply reformat and then do a fresh install of the Release Preview. This has worked for a few people.

If you still can’t get Windows 8 to install because your CPU isn’t compatible, post a comment here with your PC specs and we’ll try to help. If you’re having this CPU isn’t compatible problem in Windows 10, then check outthis postthat gives a lot more tips on how to fix it. Enjoy!

Founder of Help Desk Geek and managing editor. He began blogging in 2007 and quit his job in 2010 to blog full-time. He has over 15 years of industry experience in IT and holds several technical certifications.Read Aseem’s Full Bio

Welcome to Help Desk Geek- a blog full of tech tips from trusted tech experts. We have thousands of articles and guides to help you troubleshoot any issue. Our articles have been read over 150 million times since we launched in 2008.

HomeAbout UsEditorial StandardsContact UsTerms of Use

Copyright © 2008-2024 Help Desk Geek.com, LLC All Rights Reserved