Vertical Lines of Death

The issue is as follows.

I got a new gigabyte HD 7850 OCed edition a few weeks ago.

When i run games that strain the computer too much, after about 5 minutes of activity the computer freezes (the sounds does the buzzing-freezing thing) and i see red or green vertical lines on the monitor. Games that this happens are Starcraft, WoW, Skyrim to name a few.

-CPU is an OCed i5 750 at 3,5ghz with turbo enabled, full stability under burn test and prime,

-PSU is a coolermaster gold series 600w. I have fully tested it with a multimeter and its voltages are good.

-Ram is Corsair Vengeance 8 passes with memtest, no errors.

- CPU temp is at 65C @100% and GPU temp is 70C @ 100%




The wierd thing is that 3Dmark does not crash my cpu.
Also the GPU feels hot to the touch and so does the motherboard near the southern cooler and when i manually set the fans to 100% it takes longer for the pc to freeze.


I wonder whether there is an issue with the M/B voltages, with the card itself or if there is conflict in the OS(even thought i removed all previous drivers of my older card).


Note: This does not happen when i return to factory CPU settigns but it DOES happen when i OC even by a little (all settings on default, just increasing the BCLK a little)