Is there something wrong with my GPU?

[LukieBoy007]

I have had a AMD Sapphire 7850 for around 2 months now, and around once (sometimes twice) a fortnight (since about 2 weeks of having the PC) the GPU decides to 'play up' for a day. Whenever I try to play games, the screen will lock up and vertical lines will display across the screen; this occurs on games from Skyrim to Terraria. My temps seem fine, no overclocking is applied on the card and GPU usage doesn't fluctuate at any time. Does this sound like a problem related to the GPU?
Here is my system spec:

i5 3570k @ 3.40GHz
Sapphire 7850 2GB
4GB 1600MHz
500W Corsair V2

I am also running the 12.6 drivers.
Thanks for any help.

 

[LukieBoy007]

Thanks for all the replies, it's just weird that my whole computer locks up and vertical lines cover across the screen with a coloured background (sometimes blue, sometimes brown, sometimes yellow).
I'll try underclocking and if the problem still happens I'll try reseating the card.

EDIT: I underclocked the memory by 150MHz and tried Terraria for 10 minutes and Skyrim for 10 minutes and the computer didn't crash. After this worked I then upped the memory back to stock clocks and Terraria and Skyrim worked for 5-10 minutes on each. So far so good, I'll leave the memory at stock clocks for now and if the crash happens again I'll try reseating the card. Thank you for the help.

 

[LukieBoy007]

I'm having similar problems.

I'm getting a screen full of horizontal lines .
I boot up the pc get some black screen flashing then horizontal pinstripe lines on desktop. The desktop isn't visable at all.

Card isn't overclocked, is a reference 7850.
New build and all new components,fresh win7 64bit install.
I have done all the typical advice to no avail. I have resat and reinstalled few times, eventually pinstripes appear and lock up screen.

I'm wondering whether it is anything to do with the 2D idle clocks issue, any suggestions?

Cheers

Mine only occurs when playing games. When the lines appear, I have to force off the PC and when it reboots it's all fine... until I play a game again. So far so good still though since underclocking then putting back to stock clocks. I have no idea what's causing it though.

 

[LukieBoy007]

Cooling system's fine, 3 case fans and cable management isn't too bad. I'm using Windows 7 Home Premium 64-bit if it helps. Only background stuff I have running is Advanced SystemCare, Skype and Steam. Advanced SystemCare auto-cleans the system when my PC is idle.

Your problem seems worse than mine, does your entire system lock up or do lines appear over your screen? The packaging seems a bit questioning to me, did you buy it from Overclockers?

 

[LukieBoy007]

I built it myself. Underclocking and then returning back to stock clocks seems to have worked so far though (fingers crossed). I don't think an RMA would be necessary for me at this moment in time, I'll leave it for another few weeks or so.