CPU Fail ? 5600G

[Scoobyjacko]

Hi all, I just built my first PC for several years. All works fine - for about 6 hours. At which point, the motherboard shows a 'no CPU' light on the EZ debug. Power off/on doesn't seem to fix it at first. Yesterday, I left it powered off and unplugged overnight, then it was OK again for 5-6 hours, then off again (even though it's been left all that time no really doing anything)

The case and CPU cooler are very cool and operationally it seems to get the cpu to around 45 degrees max, so I don't think it's overheating, but can't entirely rule that out.

Its a Ryzen 5600G, with stock cooler (and stock heat paste), fitted into an MSI B450 Mortar max, 16G RAM, SSD. The Kolink Citadel case seems very cool running and PSU is 'be quiet! System Power 9 600W 80 Plus Bronze Power Supply Bulk'.

Any help appreciated.

 

[Scoobyjacko]

I'll try a cmos reset, thanks. I assume the CPU can't be dead else it wouldn't boot some time later. If I power off and leave for 5 mins, still shows 'no/failed cpu' instantly. Might replace the battery and reset CMOS...

 

[Scoobyjacko]

Did you update the motherboard bios ?

I did as I was building it, went for the penultimate one (not the beta). Did that 'cpu less' prior to build. I've replaced cmos battery and reset, and it's booted - it's 1.5 hours since failure. Have gone into bios and running hardware monitor screen. Been booted 5 mins, cpu at 32c, system at 29c, cpu fan running at 670rpm. Will monitor for a while ...

 

[Scoobyjacko]

Left it running overnight, on the h/w monitor screen in bios. All still running this morning, CPU was on 33c @10:30 and still showing that this morning. Appeared all OK. Switched it off and back on - CPU Fault light on the EZ Debug on the motherboard.... I've tried 4 reboots, all the same.

Only thing I can think of now is disassembly and re-assembly, but I'm left feeling I might be trying to buy another MB (Not sure how I would try to get it tested/warranty etc, given self-assembly etc?)

 

[Scoobyjacko]

Try some other BIOS revisions. MSI have a habit of releasing bad code.

Going to try to go to the previous version, see if that's a fix

 

[Scoobyjacko]

nope - different BIOS isn't working. Taken the CPU off the MB, can't see any physical issue, re-fitted, same problem.
Whatever the issue is, it now appears full time, just won't boot at all.

I've no spare kit, so can't swap CPU or MB - looks like my only option is to buy another MB/CPU, which is an expensive 'fix'

 

[Scoobyjacko]

Team Group Vulcan Z T-Force 16GB (2x8GB) DDR4 PC4-25600C16 3200MHz Dual Channel Kit - Grey

How do I check XMP (no access to BIOS, as it won't boot that far)