I came in yesterday morning and started up my Dell Latitude D500. It does the initial post and I can get into Setup or the Boot screen, but as soon as it tried to boot up Windows XP, all I get is a blinking line in the upper right corner. It never starts Windows XP at all. I ran the diagnostics and the only error it gave was 4E36:0852 Msg: Permanent battery failure detected. The laptop gets to the same point each time whether I have the power adaptor plugged in or I am booting from battery. I go into the setup and it looks like all the CMOS settings are correct. I thought if the CMOS battery was dead that those settings would be lost. Does anyone have any ideas or suggestions of what could be causing this?