Hello would anyone be willing to have a look at these pictures and tell me what is wrong with my gpu. PSU is a CIT 750W, card is an ati 4890 1gb which is almost new. Not sure if it has been over/underclocked and the rest of my setup is new and not faulty. I do not get this problem with onboard graphics. Using a dvi-vga adapter to connect to my tv if that helps:
http://www.tomshardware.co.uk/forum/300896-15-white-lines-screen-monitor-asus-radeon-4870#t2242468
http://www.tomshardware.co.uk/forum/300896-15-white-lines-screen-monitor-asus-radeon-4870#t2242468