My Sapphire Radeon HD 4550 is not working. I had recently updated the drivers but the issue is still there. After a few minutes the screen shows artifacts and distortion, and the screen looks divided. Here is a picture: http://imgur.com/tul5Jlp .
I am running Windows 7 64 Bit
I have a Seasonic SS-500ET 500W power supply,
My Motherboard is an Intel DG35EC MATX board.
Please help me with my card.