Ugh, trying to get Windows 11 on this HP ProDesk 400 G3 is a nightmare?

wgeb40658 · Post by **wgeb40658** » Fri Jan 09, 2026 11:57 pm

Agreed. Did you also check if Secure Boot is enabled in the BIOS?

3bAdxN9k · Post by **3bAdxN9k** » Sat Jan 10, 2026 1:27 pm

Yeah, and after you enable Secure Boot, you might also need to change the TPM device from "discrete" to "firmware" in that same security menu.

pXGYCfObMm · Post by **pXGYCfObMm** » Sat Jan 10, 2026 6:51 pm

Also, double-check that the BIOS itself is updated to the latest version from HP's website.

bDHmNhZVhQQ · Post by **bDHmNhZVhQQ** » Sat Jan 10, 2026 7:11 pm

This. Yeah, did you actually find and enable the TPM setting in that BIOS menu?

kEGgDvywt · Post by **kEGgDvywt** » Sat Jan 10, 2026 7:13 pm

Same here. You could also try the Windows 11 Installation Assistant, which sometimes bypasses the strict hardware checks.

9e22pIZ8 · Post by **9e22pIZ8** » Sun Jan 11, 2026 4:11 pm

I had the same problem. I had to enable TPM in the BIOS and also turn on Secure Boot on my G3 to finally get it to pass. Let me know if that works.