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PC problems. Screen goes black and loud fan noise.

#1Andres888Posted 4/3/2014 3:10:00 AM
Hi, in the past months I've had this problem where my screen would loose video signal and then the GPU fans will increase to 100%. I have to do a hard reset to the computer every time it happens. It started in November 2013 with my AMD 6870 crossfire setup. My computer is dust free and the temps were below 70C. I also tried different drivers and taking one card out but the problem persisted. My GPU's have never been overclocked and I have tried it with my CPU at stock speeds. This problem can happen while gaming or watching a video. I thought it could either be the PSU or the GPU's.

In December I upgraded to a GTX780 and I did not have any problems until the past few weeks where I had the same problem. I'm either playing a game or watching a video and the screen looses the signal and the GPU fan goes to 100%. I am starting to think is my PSU as I bought it in June 2009 and when the GPU's don't have enough power, the fans speed up. I have tested my ram sticks with memtest, one by one and they passed. My 780 never breaks 65C while paying games or under any stress. Could someone please help me out on what could be the problem or confirm that the PSU is at fault? Any help is much appreciated.
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PSN: CashFlowa888
i5 3570k @ 4.6GHz / G.Skill 8GB DDR3 1600Mhz / EVGA GTX 780 SC ACX / ASRock Z77 Extreme 4 / HX 1000W / NZXT Phantom / Win7 64 Bit
#2TheAlmightyCowPosted 4/3/2014 3:53:34 AM
I don't really know TBH. I don't think it's the GPU not getting enough power. (1000W is more than enough) But it could be a faulty PSU. I'm just guessing here.
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Youtube: www.youtube.com/user/gehab
Friend Code (3DS): (3866 - 8210 - 3222) SteamID/PSN: gehab NNID (WiiU): Mr.Gehab
#3Andres888(Topic Creator)Posted 4/3/2014 3:55:28 AM
Anyway to check if the PSU is faulty?
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PSN: CashFlowa888
i5 3570k @ 4.6GHz / G.Skill 8GB DDR3 1600Mhz / EVGA GTX 780 SC ACX / ASRock Z77 Extreme 4 / HX 1000W / NZXT Phantom / Win7 64 Bit
#4Pengu1nPosted 4/3/2014 4:50:00 AM
When you went from the AMD card to the nVidia one did you use a driver sweeper program once you had removed the AMD drivers? Thats what you are supposed to do when switching from one to the other to make sure all traces of the previous drivers are gone.
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AMD FX 6300, 16GB DDR3, 7870 GHZ OC 2GB, 2x 1TB HDD's, 64 GB SATA III SSD, 12X SAMSUNG BLU RAY, 750W PSU, X-FI FATAL1TY,WINDOWS 7
#5TheAlmightyCowPosted 4/3/2014 5:07:02 AM
Andres888 posted...
Anyway to check if the PSU is faulty?


Not that I know. :( Sorry
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Youtube: www.youtube.com/user/gehab
Friend Code (3DS): (3866 - 8210 - 3222) SteamID/PSN: gehab NNID (WiiU): Mr.Gehab
#6Andres888(Topic Creator)Posted 4/3/2014 5:10:17 AM
Pengu1n posted...
When you went from the AMD card to the nVidia one did you use a driver sweeper program once you had removed the AMD drivers? Thats what you are supposed to do when switching from one to the other to make sure all traces of the previous drivers are gone.


Yes, I did a complete driver sweep and when I installed the new GTX 780 I installed the latest drivers. I have also tried older drivers to see if it fixed the problem but there is no luck.

Any other suggestions?
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PSN: CashFlowa888
i5 3570k @ 4.6GHz / G.Skill 8GB DDR3 1600Mhz / EVGA GTX 780 SC ACX / ASRock Z77 Extreme 4 / HX 1000W / NZXT Phantom / Win7 64 Bit
#7Andres888(Topic Creator)Posted 4/3/2014 9:11:06 AM
Bump. Should I try a different PSU? I would have to buy one though. Or are there any other solutions before spending cash? Thanks in advance.
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PSN: CashFlowa888
i5 3570k @ 4.6GHz / G.Skill 8GB DDR3 1600Mhz / EVGA GTX 780 SC ACX / ASRock Z77 Extreme 4 / HX 1000W / NZXT Phantom / Win7 64 Bit
#8Killah PriestPosted 4/3/2014 9:22:06 AM
"Black Screens, the way its meant to be played" -Nvidia
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Laugh, and the world laughs with you. Weep, and you weep alone.
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#9foodeater4Posted 4/3/2014 9:33:45 AM(edited)
Theres really no way for the average pc user to test a PSU.

You could try running furmark or something first to see if its the video card. If your temps are all over place and the graph is produces looks like a seismic chart it could be your video card.

Also you don't need a 1000watt psu for one 780, big overkill, so if were gonna buy another PSU with the possibility of keeping it and that was the issue you could go lower wattage and still have the ability to SLI one day.

Also, not sure how long it takes your issue to happen, but if you can recreate it fairly reliably if you have any computer stores in the area you may be able to bring it in, have them pop in a psu with you and see if it happens. That would be faster then ordering online, waiting a couple days at least, maybe more since its so close to the weekend.

But overall, yeah your PSU is 5 years old now, it could just be on its way out.
#10Andres888(Topic Creator)Posted 4/3/2014 9:50:55 AM
Thanks for the reply. My temps are constant and they never go above 65C. I will take it to a pc specialist and they can diagnose the problem before i pull the trigger on a new PSU.

The other thing that I did is when I switched from the 6870s to the 780 i reconnected all the cables from the PSU just to make sure I got rid of the problem.
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PSN: CashFlowa888
i5 3570k @ 4.6GHz / G.Skill 8GB DDR3 1600Mhz / EVGA GTX 780 SC ACX / ASRock Z77 Extreme 4 / HX 1000W / NZXT Phantom / Win7 64 Bit