Hello. I have an HP Pavilion dv6, running Windows 7, about five years old. For the last couple weeks, when it's restarted to install updates, the updates haven't all updated successfully. It's also randomly blue-screened two or three times in the last couple of months.
Today, it restarted to install updates while I was out of the room and when I came back, it just shows "Starting Windows". It showed that for about a half hour. At some point, it seemed to give up and restarted itself, but just kept showing "Starting Windows". I tried restarting, and let it run for another 15 minutes or so. Then I tried restarting it, hitting F8, and restarting in Safe Mode. It ran through programs until it jammed on disk.sys. It stayed there for another ten minutes or so before I turned it off. The actions I have taken are pretty much the extent of my computer knowledge and abilities. I googled around looking for a fix, but everything I found seemed to assume a greater understanding of the matter than I have. What should I do?
I have nothing external hooked up to the computer now, nor do I usually. Also, I also tried to run from last known good configuration, but this required an administrator password. We have never set an administrator password, or any kind of password on this computer, but the computer seems to think that we have, and "password" didn't work.