Question Why won't my PC POST after upgrading to a Ryzen 7 5800X3D ?

Mar 22, 2023
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Ok so I have a Gigabyte 450 DS3H WiFi rev 1.2 mobo that used to have a Ryzen 5 3700. I have recently upgraded the BIOS to the latest version f65a I believe, using the old CPU.
I have tried CMOS resets, reseating the CPU and GPU, I have tried one stick of ram in each slot, but it won't POST ?
 
Last edited:
Mar 22, 2023
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your probably were at f40 and above, as 3700 CPU wouldnt work with older than F40


so being on latest now shouldnt cause issues


try reseting cmos with clr_cmos jumper while psu is powered off and then booting with just only one ram stick in A2 slot and let it run for ~10 minutes if it post or not
Tried that previously with no luck. Let me try again though to see if anything change with bios update.
 
Mar 22, 2023
13
0
10
Tried that previously with no luck. Let me try again though to see if anything change with bios update.
your probably were at f40 and above, as 3700 CPU wouldnt work with older than F40


so being on latest now shouldnt cause issues


try reseting cmos with clr_cmos jumper while psu is powered off and then booting with just only one ram stick in A2 slot and let it run for ~10 minutes if it post or not
Ok so this hasn't worked.