I am a semi noob when it comes to computers and I have a Packard Bell desktop that has a Pentium(R) 4 CPU 3.20GHz 3.19GHz, 1.00 GB of RAM. It runs Microsoft Windows XP Media Center Edition Version 2002 SP2. When I turn it on the Packard Bell logo come up fine, then when XP loads, it jolts and then stops. The computer does nothing else but stay on that screen. Does anyone know the problem is as I cannot turn it off as I cannot restart. I can bypass the problem by loading the recovery menu by pressing F11 at startup and then doing a system restore but then cancelling it when I can see my background picture.