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‎06-27-2021 02:21 PM

HP Recommended
Product: ProDesk 600 G3
Operating System: Microsoft Windows 10 (64-bit)

Just acquired a used ProDesk 600 running Win10 Pro. Spent a day updating Windows and loading the latest BIOS off the net.

 

Now I'd like to prep it for Windows 11.

 

I found the HP utility to upgrade the TPM module's firmware from 1.2 to 2.0; that went fairly smoothly.

 

However, when I try to switch to UEFI Secure Boot, the machine won't boot from the existing Windows partition (even after I disabled the Network Boot, which I'm not currently using). Attempting to change to that mode yields an error screen:

 

BootDevice Not Found

Please install an operating system on your hard disk.

Hard Disk - (3F0)

F2 System Diagnostics

For more information, pleasure visit: www.hp.com/go/startup

 

I may be missing something obvious on the page pointed to, but I haven't found the answer.

 

Is this drive not compatible with Secure Boot, or do I have to register it somehow, or...?

 

adTHANKS!vance

 

(By the way, the single kindest thing you can do for yourself, after battling your way into the BIOS, is to turn on the 5-second Boot Delay so you don't have to struggle to hit escape or F10 in such a tiny time window. May I suggest that this should be the default?)

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