Whenever I turn on my computer windows xp pro loads and when it goes to the blue Welcome screen that says "Welcome" it stops loading and my computer stops loading but I can still move my mouse pointer anywhere. The only way to get to desktop is when i push alt+ctrl+del and then it gets out of the Welcome screen and goes to desktop. So every time I turn my computer on it always stays on the welcome screen unless I push alt+ctrl+del every time. I have no startup programs except antivirus.