Hi guys. I've been having problems with when I try to install vista sp1 on my vista ultimate 32. I installed all the prereq updates and turned off my antivirus and everytime I try to install sp1 it finishes all 3 configuring updates stages it reboots and gets stuck on the vista black loading screen indefinitely. It's done this the last 6 times and rebooting does nothing, I can't access safe mode, and I have to system restore. My copy of windows is Legit and activated. Could it be something to do with OEM software?