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I need help with a problem. Problably my PSU

Hello everyone

Yesterday I got a black screen twice. I was just using my pc, I was not playing anything and all of a sudden I got a black screen, no messages or beeps, just a black screen, had to hold the power button to turn it off. It never happened before.

My specs:
i5-4690
2x4GB RAM Corsair Vengeance 1600mhz
R7 260x 2GB OC Edition from Gigabyte (I never overclocked it)
1TB 7200 HDD from WD
and a VX-550W Gold from Corsair

I built this pc this year, but the psu is from my old rig, from 2010. When checking the event viewer all I see is kernel power event id 41 with bugcheck 0. From what I've found on google it's problably my psu, but is there anyway to be sure? PSU's are kind of expensive where I live, I don't want to buy a new one just to find out it is not the problem.
6 answers Last reply Best Answer
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  1. Best answer
    Can we get a detailed look (pic/s) of the supply and or case in which it is attached?

    Assuming the only old part is the PSU, it's fair to guess that would be a good starting point given your reported error. First make sure it is good and clean. If not and you happen to have compressed air give a few good shots (but try not to let the fan spin up too fast). Can air will work too but may not be quite as effective. Other cleaning options require removing it so I will hold off on them until more is known. It's also possible that a connection has loosened or otherwise developed what I like to call "creeping corrosion" which is oxidation that starts on the open parts of the connector permeates back up into the insulation.

    With the computer off, unplug the cord and let it sit a good two minutes (over kill but it's just two minutes). While wareing an artistic strap (preferred) or touching a metal part of the case (forearm or elbow if you need two hands) and disconnect everything in the case (sata cables, power cables etc...). While everything is unplugged, inspect the connections both on the PSU and where they plugged into for anything that looks odd or "not like the others". If everything looks ok and does feel loose, plug it all back up.


    While the computer is running (and loaded by the attached devices) get you a DMM (Digital multimeter) if possible and check all of these voltages (where applicable). Make sure they are there +/- 2%. You should be able to stick the probes in the top of the molex style connector for the ATX connector (24 pin) and the CPU connector (4 pin) and check them. Also, check unused connections too if possible.
  2. I do have compressed air at my job, I will take my psu with me tomorrow to clean it.

    Btw, if my pc does not receive enough power will it have reduced performance?
  3. Ravagna said:
    I do have compressed air at my job, I will take my psu with me tomorrow to clean it.

    Btw, if my pc does not receive enough power will it have reduced performance?


    Performance would not be affected in an easily measurable or noticeable way. With a supply voltage issue it's more of a it will either work or not work deal. The PSU may simply "glitch" or "stutter" in a falling state, but otherwise operate in a proper way with the exception of the voltage being a little off under load. This is true in most cases with a fixed supply source.

    Also, is the area you live in known to have brief brownouts, short power outages/spikes (as in blink of an eye) or other utility anomalies?
  4. The_Tester said:
    Also, is the area you live in known to have brief brownouts, short power outages/spikes (as in blink of an eye) or other utility anomalies?


    Yes it is, but it didn't happened on Sunday, nothing else turned off or any blinks or something like that.
  5. Just an update, a friend of mine just bought a new psu, its a xfx 500w xt 80+ bronze, he lent me so I could test and it happened again after 3 hours, but it was when I was not in front of it. I was eating something and was away from the pc for like 20 or 25 minutes.
  6. Sorry for being late, I received an update today on my e-mail, just wanted to say that I solved the problem, it was my gpu, I removed it for a few weeks and the problem stopped, after inserting it again the problem started again two days later, I have a new gpu now, for a few months already and the problems are gone!
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