HP EliteDesk 705 G4 Desktop-Mini-PC: Upgrade to Ryzen 5 3400g

[Norbert66]

Wanted to upgrade to AMD Ryzen5 3400g to be able to update to Windows11. Acutal Bios is installed. The PC doesnt start after installing the Ryzen5 3400g. Going back to Ryzne 5 Pro 2400g and it works properly.

What might be the problem here?

[Paul_Tikkanen]

None of the PC's i the 705 G4 model series support 3rd generation Ryzen processors.

See the processor upgrade info by form factor at the link below.

HP EliteDesk 705 G4 Desktop Business PC

If you want to install W11 on your PC as is, you will have to use one of the many workarounds out there on the internet.

The below method by far is the easiest way to do an in place upgrade from W10 > W11, and I have no doubt that your PC should work just fine on W11 with the existing hardware.

I have upgraded at least a dozen hardware unsupported PC's to W11 and they all work fine.

Watch this video:

How to Install Windows 11 on Unsupported PC in 2025 (New Easiest Method, No CMD)

Download the W24H2 ISO file and use that (3rd option).

Download Windows 11

You can download the free 7-Zip file utility from the link below. The top line is for 64 bit.

7-Zip

You'll have to repeat this procedure if and when Microsoft rolls out the new W11 builds because a PC that does not meet Microsoft's minimum W11 hardware requirements will never automatically get the update to the next build.

They have been releasing new W11 builds each October so far.

Other than that, your PC will continue to get the monthly cumulative and other updates.

That's only a minor inconvenience to have continued OS support beyond October of 2025.

If things don't work right on W11, you have 10 days to easily go back to W10 as long as you don't delete the W1 upgrade files or the Windows.old folder.

How to Go Back to Windows 10 from Windows 11 (Tutorial)