This is regarding my Vista Home 64bit desktop.
This morning I rebooted my system due to Windows update requirements, and when the system attempts to boot back up, it locks at the windows boot screen (the one that has the little greenish lines scrolling from left to right) the green lines scroll by about 4 times and then abruptly stop. HDD activity stops as well. I let the system sit for about 5 minutes and there was no change. I was then forced to do a hard power down. When I rebooted I chose to boot into safe mode which actually seemed to hang a little more than it normally would, but the HDD light was very active. I let it continue, and it eventually booted into safe mode.
At this point I selected to schedule a disk check to see if maybe there were errors on the disk. I then rebooted, and the same issue happened where it locks up during the windows boot screen with the green bars scrolling. They scrolled by about 4 times again, and then just halted and the system was locked again.
At that point I decided to see if I might be able to get a little advise on what to try next. I haven't ever seen this issue before, and am stumped on what it could be.