Weird grey screen with lines 7870

[Steveocee]

Hello,
Posting on behalf of a friend. Whenever he needs to do anything graphically intensive, his 7870 (LE edition) seems to grey screen and get vertical lines.

He has tried reinstalling OS to rule out driver conflict (previous card was old nvidia)

PSU is relatively new (but budget as I understand it)
Asus M4A87TDUSB3 board (was mine running a 7950 happily)
AMD Phenom X4 960T (stock clocks)

Any ideas of what to check?

 

[sneakysnail]

Is the card overclocked at all? knowing the exact psu would be handy as well. Read some stuff about this happening with 7870's before and It usually ended up in getting a replacement card though.

 

[Steveocee]

If it is clocked it would have come clocked from factory. WIll try and get exact model of both card and PSU

 

[Steveocee]

PSU is this one from OCUK (Swift 750w)
http://www.overclockers.co.uk/showproduct.php?prodid=CA-059-OP&groupid=701&catid=123&subcat=2466

Graphic card is an unbranded AMD Radeon HD7850 OEM that was bought from the rainforest place.

 

[oldestgregg]

Can't say I have ever heard of swift! First rule of building a PC though....do not scrimp on PSU! Buy cheap,buy twice.....and by that I mean everything else attached to it!

 

[Steveocee]

Would that cause an intermittent problem like this though? My reactions were probably drivers or potentially overheating.

I can understand it could be the PSU especially if it doesn't quite perform how it should do but could do with better clarification on what could cause this.

 

[MiKeOnE10110]

Have you tried multiple drivers? and the best test of all put your gpu in there. Seems a good chance his card is faulty from the description you've gave, again to confirm simply stick your card in there.

 

[Steveocee]

As luck would have it, I think another guy form the office is lending his card to test to try and rule the card as the problem/not problem. So will try that.

 

[Steveocee]

I think we have a winner, just received this;
"How about the fact that I removed my GPU last night (as well as the Wifi card) and had absolutely no issues whatsoever, using Rev’s 677x, that’s playing a good 2 hours of Arma 3 – unheard of on my 7850 and about 40 minutes of Skyrim."

Further investigation as well revealed that this is a Sapphire 7850 with a twin fan cooler on it.
http://www.overclockers.co.uk/showproduct.php?prodid=GX-295-SP&groupid=701&catid=56&subcat=411