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

Get help upgrading your PC to Windows 11. TPM, Secure Boot, compatibility issues and more.
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TechGuy52
Posts: 5
Joined: Sun Dec 21, 2025 8:12 pm

Post by TechGuy52 »

Yeah, This happened to me. I also had to switch from RAID to AHCI mode for the drive in the BIOS before it would pass the check.
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vxLqV1O
Posts: 3
Joined: Sat Jan 10, 2026 5:49 pm

Post by vxLqV1O »

Can confirm. Agreed, and one more thing: after you switch to AHCI, Windows might not boot, so you'll need to change a registry setting first or be ready to reinstall.
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