This is day 8 of the worst computer problem I have ever had. My computer has a virus, at least I am pretty sure. I ran a RAM test utility and the ram is ok. The computer makes it to the Vista logo on startup and then the screen stays blank and it never comes on. I have let it run all night and it never comes on. This is a Gateway LX6200 Vista 64 machine running a Quad-Core with 8g RAM. I appreciate any suggestions. I hope its not a problem to ask here since this is a college class dealing with computers. I figured maybe someone else experienced something similar to this problem. The MBR or master boot record has been re-partitioned, and re-formatted, so I do not think it is a common virus. This happened while running a registered version of Norton Anti-virus 360 v.3.0, it actually tried to download a patch to fix the problem, however not successful.