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Hard problem with my new pc

Y

Yskander

Junior Member
Hello guys!

I would wish to explain to you my problem. A few months back I have assembled my new PC with the following hardware:

PSU: Corsair CX750
GPU: R9 280
Motherboard: MSI 970A-G43
CPU: AMD FX-6300

After a bit problems started to appear, namely the computer started to freeze and restart by its own, even multiple times in a row when it was under heavy load. With time it was doing it more and more, even without being under load, until I changed the thermal paste. From then on it seemed that everything was solved, but after only a month the same problem is back, even if for now it seems to only happens under load. Moreover I have checked all voltages in every situation, so I would exclude the PSU as being the culprit here.

The recent temperatures I have obtained during a benchmark are (nothing is overclocked):
CPU - 60°
GPU - 65°
Motherboard - 50°
 
Unless you're checking those voltages with a nice scope, you cant rule out the power supply. The voltage can drop long enough to cause a reset, and then come back to normal and you'd never see this on a multimeter.
 
My first guess would be the PSU as well... plenty of people on these forums have had weird occurrences like these, which got solved once they upgraded their PSUs...

It can't hurt to try a new one.
 
I used a tester like this, and the voltages are always normal, even when the PC crashed, so for this reason I would exclude the PSU

tester.jpg
 
what happens when it reboots? blue screen of death?
can you describe the symptoms?

could be software, could be something else.
 
Pay careful attention to the "Power Good" signal (Gray wire) between PSU & ATX connector. Both timing and level matter. As a diagnostic test, you could patch a 5 volt supply line to this terminal and see if the system sustains.

If it does, I would replace the PSU. Some PSUs just dont work well with some ATX MBs.

https://en.wikipedia.org/wiki/Power_good_signal
 
The symptoms are so many: sometimes the computer restars a few times in a row, other times turns off or freeze (and I am forced to restart).
When the restars are many, appears a blue screen relative with an error to star Windows, but it is easily solved.
It's complicated, it could also be a manufacturing defect
 
A motherboard temp of 50 is pretty darn high, depending on where the sensor is. What program are you using?
 
Yskander said:
I used a tester like this, and the voltages are always normal, even when the PC crashed, so for this reason I would exclude the PSU

tester.jpg
Click to expand...

That's exactly the kind of device I was talking about. You could have a 50mS spike to zero volts and that thing wouldnt pick it up. Such a power spike on the +12V line would ravage a PC.
 
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