Need Help

[outlawgaming]

hiya guys, so recently my partners pc went down the pan, she was running a b550 gaming plus, ryzen 5 5600g, 32gb corsair vengeance pro rgb, AMD Rx 6700 fighter edition (10gb) with a seagate 2tb HDD and a kingston 250gb ssd, all powered with a corsair RM 850w psu, well we was playing fortnite and her processor hit 96 degrees all cooled with a MSI MAG CoreLiquid 360mm aio...
so we shut her pc down straight away, its never booted since, just sits on cpu ez debug light, with ram, without ram, no matter what.. even tried with no drives at all and tried it in my pc to ofc get the same results.
now shes bought a ryzen 3 3100 (which weve seen is compatible with the b550 gaming plus) to which BOTH pcs do not power at all. but when we throw the ryzen 5 in we get some form of life... and with the 3 3100 no life at all? any help would be great as we are both seriously confused?

 

***edit**** 

tried bios flashback!

[Wardus]

It's possible (not plausible) that the 3100 is dead. The CPU debug light could point to the 5600 being dead as well. Have you tried to take the CPU from the non-overheated PC and put it into the overheated PC? 

[SpookyCitrus]

Very weird. Sounds like it originally had an overheating issue with the 5600G, if your cooler is improperly mounted or for example dead. Like a failed or bad pump, the CPU could be getting too hot and tripping the overtemperature sensor causing the motherboard to not boot. However, if both CPUs don't work in an entirely different motherboard that adds a little more mystery.

 

Possibly, the motherboards VRMs were cooked? And the processors that get installed are being fried by the board?  What board is in your system? Is it also compatible with both those CPUs and has an up to date bios?

 

Was the 3100 purchased used or brand new? If it was used it's possible it was just bad from the get. If new I'd lean more to there is a chance the motherboard in the system is having some sort of power delivery issue. If it's bad enough it could be frying or hurting the CPUs. It's fairly rare for an issue such as that though.

[outlawgaming]

again, the 5600G still powers, just cpu debug and no output to monitor bud

[outlawgaming]

same board in both systems, same outcome by both pcs... even though mine is working perfectly fine. also at the time both were cooled the exact same way, tried everything i can ever think of, including putting my cpu in her pc, which gives the same outcome, just cpu debug all the way with no monitor output