Installed new CPU. Three beeps and PC doesn’t boot.

[nick_123]

I have just purchased a new CPU for my PCS desktop - upgraded from Ryzen 7 3800x to Ryzen 7 5700x3d.

I contacted PCS before upgrading and they sent me the relevant BIOS update that supports this particular CPU with instructions on what to do - that seemed to go smoothly (Mobo is a TUF X570-Plus). I then installed the CPU and on power up I get 3 beeps and no boot up.

Any tips on what I can try to get things going again?

 

[BlessedSquirrel]

I have just purchased a new CPU for my PCS desktop - upgraded from Ryzen 7 3800x to Ryzen 7 5700x3d.

I contacted PCS before upgrading and they sent me the relevant BIOS update that supports this particular CPU with instructions on what to do - that seemed to go smoothly (Mobo is a TUF X570-Plus). I then installed the CPU and on power up I get 3 beeps and no boot up.

Any tips on what I can try to get things going again?

what’s the beep sequence? Long or short beeps?

Can you copy and paste your full specs from the order page?

Which BIOS version did you flash?

What process did you take to replace the processor? Please outline as detailed as possible.

 

[BlessedSquirrel]

Ah, 3 short beeps is RAM related, not CPU. Possible you just nudged one of the DIMMS during the CPU replacement. Probably worth fully removing both, clean the contacts with a light cloth, just give the dimm slots a blow to clear out any dust and reinsert.

Hopefully that should be all

 

[nick_123]

That did the trick, thank you. First load in didn’t recognise my new GPU but a restart seems to have sorted that.

I do seem to have lost my BIOS settings, although from memory I didn’t fiddle with them anyway. I’ve set it to ASUS optimal and most of the settings are on Auto. I assume that is ok or should I be looking to optimise the system? Thanks again.

 

[TonyCarter]

I do seem to have lost my BIOS settings, although from memory I didn’t fiddle with them anyway. I’ve set it to ASUS optimal and most of the settings are on Auto. I assume that is ok or should I be looking to optimise the system? Thanks again.

That is correct. Anything you've manually changed in the BIOS will revert to the default...it's a troubleshooting/failsafe fallback.

Just check that your RAM is being reported at its correct speed as that's probably the only thing that would have been changed when the machine was set up originally. Also check that the auto-install of Armoury Crate hasn't become enabled by default (as it is prone to doing).

If you change anything in future, you'll need to save the setting to a USB stick or something. I keep my tweaked, but known working BIOS settings on the USB stick I use for BIOS updates, so I always know where it is.

 

[BlessedSquirrel]

Yes, as @TonyCarter it's likely the BIOS flash may have reset your RAM speeds to default.