I have a Dell XPS 400 that was very infected but would boot. After clearing all infections and verifying it worke, I ordered 4 Gigs of memory for it. After installing the memory the machine would not boot . I removed 2 Gigs and again it would not reboot. I then put back the original 512 Mbytes of memory and again, the workstation would not boot.
I removed the battery and cleared the CMOS and the machine came up (after I changed the time and reset the Raid setting.) Now the pattern is the machine will only reboot if the battery is removed. If the battery is installed it will boot once. After resetting the CMOS (or just hitting F2) the workstation does not post at all and displays a black screen. I have left the battery out for 2 hours thinking it would reset all but it did not. So the pattern is when the battery is out and the CMOS is cleared the machine boots fine (exept for the date and Raid settings). If the battery is inserted and the machine will not reboot.
Any help would be appreciated.