white lines gpu problem maybe

hi i hope someone here can help ive included a pic of what i see during boot im assuming im gonna need to buy a new gpu
i had this same problem a few weeks ago, i installed win7 back from win 8 trial version and corrected the voltage on my memory and i did think that had fixed it because it had not happend once up until today , i tried 2 monitors and is same even tried both dvi ports and still any help would be vrry appreciated.

p5n-e sli
e6750 stock speed
corsair xms6400c4 at stock speed and correct volts
radeon hd4870
1000w psu
lots of fans case is well cooled and clean nothing overclocked


thanks in advance

 

In another thread DSTM recommended that you install Speccy http://www.piriform.com/speccy/download to check your temps. Did you do that and, if not it is still a good idea to install the free version and see what it says about your GPU temp. That being said, you are probably right and it time for a new card. Probably is not definitely so check the temps and see if that gives rise to a solvable issue.

 

thanks for the reply i cant actualy log in to be able to check temps even after a few hours when it would be cool, i get to windows login and all you can see on screen is black and white patterns
i might be able to in safe mode the screen is still messed up but u can just make out whats what ill post back tomorow with temps if possible

 

Most prob your card but I would try other options first.

The image in post one points normally to heat or drivers.

A stuffed Ram stick I have seen cause similar. Try 1 ram stick at a time.
Corrupted drivers can cause this on boot.
Clean contacts and reseat your card.
Check for new drivers here

http://support.amd.com/us/gpudownload/Pages/index.aspx

Try and get a reading on your temps
If all this fails then it has to be the card. The card could have been overheated too many times and finally gave up.
Try the card in another computer and see what gives or try and borrow a card.

 

at first i could get into windows if i restrted pc from safe mode but now i cant get on at all seems its getting worse, ill try evrything suggested and post back

 

Has this mobo onboard graphics?
If it has remove the card and hook your monitor up to the mobo graphics port. It will be VGA so you will need the cable (normally blue ends on the cable.)
You may have a failing Hard Drive.
Any beeps on boot, clicking or grinding noises?

 

mobo dont have onboard video and no bleeps on startup windows also acts like nothing wrong if i cant get a fix i will have to rebuild i will post back with results when im done, thanks for help