I have an HP Pavilion dv6700 Notebook that will not boot. It was left unplugged for several months because I don't use it very much. I am getting ready for a vacation and usually take it along but when I plugged it in to update the OS it started downloading and installing updates then shut down and now goes into a loop. Tries to boot, gets as far as loading the desktop then black screen and then starts reboot again.
It has the original bios version F.34. everything there looks good. Ran HD self test from bios then memory test. Everything checks out ok. Factory OS was Vista but is now running 7 Ultimate 64bit.
If I try to boot in safe mode with networking I get a BSOD. Safe mode will boot. Safe mode with command prompt will boot.