Can a bad psu cause a gpu to artifact?

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coolladbw2002

Aug 4, 2018
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I bought a second hand evga gtx 660 to install into my pc. When I got it and installed it I noticed it that the computer would randomly shut down mostly under stress. My friend thought it might be down to the gpu I thought this strange as it was only hitting about 60-70° when under load. But to make sure I cleaned it out and reinstalled it. Tho the problem persisted. I then tried messing with the fan settings in msi afterburner, I increased the speed and changed tried slightly underclocking the card to see if this would help. After it shutting down for the sixth time I decided to replace thermal Paste. Even tho the temps where relatively low in when under load staying between 40 and 50°. When I replaced the thermal paste and reinstalled the card the artifacting began with green and purple horizontal lines. The screen resilution also looked terrible. After a while of trying to repair the card I gave up and bought a new one. The same shutting down occurred. I have now figured out that the power supply Is to blame for this shutting down and not over heating as my friend had suggested. But what I cannot understand is that why would an underpowered psu cause a gpu to artifact the gpu still artifacts to this day. Can anyone explain what could have caused this to be happening, could it still be the underpowered psu and if the card is permanently damaged? .
 
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coolladbw2002

Aug 4, 2018
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Gpu was an evga gtx 660
New gpu is a msi gt 960
My old psu was a power x 3
This is a cheap crappy psu you will have difficulty finding it it's ment to be a 600w but I know thats fake its now getting ripped out of my pc and I'm replacing with a corsair vs650.
So have you any idea what would have caused the card to artifact if not the psu...


 
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Phaaze88

Phaaze88

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Incompatible drivers, or installing new drivers without having uninstalled all the old ones, and well, this is one of the risks of buying second-hand hardware.
Did you use anything other than compressed air to clean the cooler? Alcohol to clean off the old paste?
The shutting down is definitely the power supply.
 
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coolladbw2002

Aug 4, 2018
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I used compressed Air and cotten buds to clean all the dust and then used a paste scraper and scraped all the old thermal paste off. But I don't believe it's drivers I originally thought that but a reinstall of all drivers did nothin. One thing I noticed is that when the artifacting was occurring I could not get into the bios when booting up. The card also wasn't always recognised by the pc some apps such as kombustor would recognise it others wouldn't. I also got an error code which was error code 43. Does this change anything and can you tell me the issue?

 
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Phaaze88

Phaaze88

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The scraper was plastic, right?
Error code 43 doesn't change anything. That's Windows also telling you that it doesn't recognize the hardware.
This is caused by either failing drivers or hardware - you did say the 660 was second-hand, and neither uninstalling or reinstalling drivers is guaranteed to fix it.
 
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k1114

k1114

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Yes a psu being too low will damage and eventually kill components. It's the same way dirty power does it. Low quality psus and a psu that can't provide enough power go hand in hand. When a good quality psu can't supply enough it'll go off. Too much power is just as bad as not enough and there are safeties for high and low voltage. https://www.tomshardware.com/reviews/power-supplies-101,4193-21.html Bad psus won't have these protections and just keep on running, damaging components til they die. Your other components on the psu were damaged as well. The gpu just shows the effects more easily by video but you have a lowered lifespan on the whole pc.

We can't stress enough how important it is to get a good quality psu. The vs650 is ok but I wouldn't recommend it.
 
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coolladbw2002

Aug 4, 2018
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The scraper was plastic yes. I tried reinstalling drivers but the actual nvidia website didn't recognise the gpu to allow me to install drivers same type of thing as the pc. Tho I never tried reinstalling them. I believe the vs650 will be OK for me to use for my current build, although I understand that for any upgrades it will need to be changed. It should be coming today so I'll be able to see if this solves the shutdowns for the short run.
 
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coolladbw2002

Aug 4, 2018
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Thats the strange thing tho prior to the artifacting the card was perfectly recognised by everything. Now when I visit the nvidia site with the graphics card in it comes up that the card is not recognised

 
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coolladbw2002

Aug 4, 2018
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I was worried I had done that as well. Just to see if it's drivers. How could I delete the drivers for that specific gpu because I have used a few gpus on that system and don't want to lose them drivers I have already tried reinstalling drivers but that doesn't work as card is not recognised.

 
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