Different brands use different keys, and you can learn more in our guide to enter the BIOS. When you see the first signs of life, such as the manufacturer's logo, repeatedly press Esc, F1, F2, or F12.One thing that's worth keeping in mind before starting this process is that in some cases, your PC may have TPM or Secure Boot support (another Windows 11 requirement), but it's disabled in the BIOS, so first, you should make sure Secure Boot is enabled alongside TPM. In this article, we're going to show you how to do that. While there isn't much you can do about compatibility if you have an x86 CPU, you can bypass the requirements for specific CPUs or TPM support, which allows most Windows PCs to upgrade to Windows 11. All of that means that many users are left without an official path to upgrade to Windows 11, even if their PC still runs well enough for them.