I know this question gets ask everyday but I haven't seen the answer I need. I am not a computer geek but this is driving me nutz. I have an alien area-51-7500 with a nivida 8800 gts. I started having graphics issues with colors all screwed up and finally went to black screen with 8 vertical lines. I can boot up in vga mode and type this question. In device mngr, there are two adaptors...one is okay and the other says it cannot start (10) I have redone drivers..rolled back..etc but nothing works. So, I need to replace the cards but with what? Also, is this pci or pci express or what? I have an SLI connector. Sorry to be so dumb about stuff. I moved and cannot find all the books it came with. Its about three years old. It has intel 2core and 1k watt power.