Why does my Computer keep Black Screening?

AngrySoviet

Honorable
Jan 27, 2014
12
0
10,510
Hello everyone. I recently built a new PC from scratch, and I have been having problems with it. Here are the specs:

- i5 4670k Processor
-NVIDIA Geforce GTX 760 GPU
-Corsair CX power supply 750W
-8 GIGS RAM
-ASUS z87m ddr 3 motherboard
-Corsair Carbide case

All of these components are brand new. I even bought a new HDD and a new Windows 7 install disk. However, every time I play, the PC crashes at VERY irregular intervals. Usually, I play for about 1-2 hours, and it crashes. But the confusing thing is, sometimes I play for up to 7 hours, I believe everything is fine, then BOOM it crashes again.

Now here is the really weird thing: I brought the PC over to my friend's house so he can look at it. He ran it for three days straight, played it for more than 7 hours straight, and there was no problem with it. The day I came over to pick it up, I play-tested it out for a bit, still no problem. I brought it back home with me, and it started crashing yet again, sometimes after 2 hours of gameplay, sometimes after 5.

What's the problem? It's definitely not overheating. The highest temps I've gotten are 60 Celsius on my GPU and 41ish Celsius on my processor. It's definitely not a virus. Could the problem be my monitor? Sometimes it makes a weird buzzing noise during games that can be very overpowering at times. I can't imagine what else it may be since it only seems to be crashing over at my place.

Let me know if there is any other info I can provide. I am very inexperienced with computers so forgive me if I made any errors.
 
Do you have the computer on a surge protector (not just a power strip) at home?

My thinking is that you could have had a power line surge at some point in the past which got to your power supply, and because you have a good one, the power supply took the brunt of the hit. That would leave the computer functioning perfectly, but the PSU would be a LOT more sensitive to the power coming into it...

And so at your friend's house where it was plugged into a good surge protector, it was getting cleaner power and able to function better.

Is it possible to swap your PSU out with your friend's, just to see if that fixes the problem?