Ugh, trying to upgrade this HP ProDesk 400 G3 to Win11 and it’s a nightmare?

GyjHnGpH · Post by **GyjHnGpH** » Fri Jan 09, 2026 6:29 pm

I had the same problem. I also had to change the TPM from "Discrete" to "Firmware" mode in the BIOS on mine before it would see it properly.

O5yl810xpk3k · Post by **O5yl810xpk3k** » Fri Jan 09, 2026 6:30 pm

Yeah, and if you find the TPM setting, make sure it's set to "Enabled" and not just "Available."

530slqeon · Post by **530slqeon** » Fri Jan 09, 2026 8:34 pm

+1 Agreed. Also, sometimes you have to set it to "Enabled + Activate" or "Enabled with PPI" in that same BIOS menu.

VTiMObFCu · Post by **VTiMObFCu** » Sat Jan 10, 2026 3:32 pm

Agreed. This happened to me. I had to enable it and then also clear the TPM in the security settings before the checker would see it properly.

ssh443515669 · Post by **ssh443515669** » Sat Jan 10, 2026 5:51 pm

Yeah, that's exactly it. One extra tip: after you clear it, you might need to restart and go back into the BIOS to enable it again before booting. Hope that helps.

61guuyp · Post by **61guuyp** » Sat Jan 10, 2026 7:11 pm

I had the same problem. I had to enable it in the BIOS and also clear the TPM in the security settings before Windows would finally recognize it.