I've tried all of that and I tried reinstalling the GPU/resetting biosHave you checked gpu/monitor connections & tried another video cable?
Can you get a spare monitor to try?
I tried safe mode, the lines are still there but it does show up in device manager...The gpu is not in device manager at all?
Does the problem happen in Safe Mode ?
Yea it's the GPU...I looked up the mobo specs. Can you enable the onboard gpu in the bios, and remove the gt640 to ser if the problem persists. That will isolate the gpu as the problem comonent.
Yea thanks for the helpBeing an old system, if you can get by with the in-built gpu then maybe its the best way till you can upgrade. Cheers.
Yea it's the GPU...
The integrated graphics work just fine...