Question How to check if mothermboard (Aorus elite b450) is not damaged( no physical signs of damage) if cpu is probably not working?

[vaurold]

I was trying to plug/unplug cooler in the motherboard due to the fact that he wasn't working and i didn't turn off the PC. at that moment it turned off. i'm unable to turn on the pc ( lights on the motherboard flash for 1 sec then turn off , like if it was protecting itself from short circuit. and i have one more question , my ryzen7 2700 was working on 95 degrees celcius for some time , ( i didn't notice that cooler was not working), can it be burned? i mean pc turned off while cpu was at 65 degrees aprox. and i 'm wondering if pc can operate for some time (some mins) after cpu was burned.

So the main issue for me is to determine what is broken ., motherboard or cpu, so i'll know what to buy, reseting bios via battery removal didn't work. Halp

 

[jay32267]

My first thought is that it's the motherboard because....when you unplugged the cooler.....you actually de-energized a coil.....which is the coil in the fan motor.

When you de-energize a coil you get a voltage spike.....and I think it's possible this spike damaged the motherboard.

 

[saint19]

Hi and welcome to Tom's forum.

Remove the CPU and check that does not have bent pins.

 

[vaurold]

Thank you for your replies. I forgot to mention something important. During launch , red motherboard diodes which indicate the problematic part because of which the shutdown occures, indicate that cpu is the problem. In computer repair service i was told that they're almost sure ( 90%) that cpu was burned. However they don't have spare ryzen to test motherboard whether it's the problem or cpu.

Hi and welcome to Tom's forum.

Remove the CPU and check that does not have bent pins.

no, it does not have bent pins.

My first thought is that it's the motherboard because....when you unplugged the cooler.....you actually de-energized a coil.....which is the coil in the fan motor.

When you de-energize a coil you get a voltage spike.....and I think it's possible this spike damaged the motherboard.

that it is quite possible, is there any chances that it can be repaired , or replacement with new one is inevitable? i know you can't tell for sure cus u can't see the motherboard, just tell opinion. Forgot to say that i succesfully plugged and unplugged cooler 2 times , shutdown happened after trying to plug it in for the 3rd time. ( i'm not quite clever)
Anticipating your questions why i didn't go to specialist, is because they are pretty rare in my country ( Azerbaijan, Baku) and the ones whom i phoned, told me that they can't help with my issue :/ I'm still searching for a good computer service.
If you have any information how to test that motherboard is operational , i will be grateful. As i understand CPU can be tested on any other motherboard with am4 socket, and finding one is almost impossible for me.

 

[saint19]

Remove all components except for CPU and PSU and try to post if the motherboard is ok you should see the POST screen...

If nothing happen, the motherboard is dead.

 

[jay32267]

Thank you for your replies. I forgot to mention something important. During launch , red motherboard diodes which indicate the problematic part because of which the shutdown occures, indicate that cpu is the problem. In computer repair service i was told that they're almost sure ( 90%) that cpu was burned. However they don't have spare ryzen to test motherboard whether it's the problem or cpu.

no, it does not have bent pins.

that it is quite possible, is there any chances that it can be repaired , or replacement with new one is inevitable? i know you can't tell for sure cus u can't see the motherboard, just tell opinion. Forgot to say that i succesfully plugged and unplugged cooler 2 times , shutdown happened after trying to plug it in for the 3rd time. ( i'm not quite clever)
Anticipating your questions why i didn't go to specialist, is because they are pretty rare in my country ( Azerbaijan, Baku) and the ones whom i phoned, told me that they can't help with my issue :/ I'm still searching for a good computer service.
If you have any information how to test that motherboard is operational , i will be grateful. As i understand CPU can be tested on any other motherboard with am4 socket, and finding one is almost impossible for me.

My opinion is that I think replacement is easier than trying to get it repaired....at least where I live.

....and just because nothing bad happened the first two times doesn't mean something bad couldn't happen on the the third time.

As a general rule....I try not to connect and disconnect things powered up.....but I break this rule sometimes too for various reasons

As far as testing the CPU or the MB....the easiest thing is to swap the CPU in another MB or swap another CPU in yours...and I realize this might not be easy if you don't have access to either.