|Turn off CAPS LOCK please - it's shouting.|
This isn't a security issue, it's probably a software fault with XP.
You need to reboot, keep tapping F8 until you get the extended
safe mode menu, and select the option to 'disable automatic
restart on system failure' - this should let you see at what point
the boot-up is failing. Note down the message you see and post
"I've always been mad, I know I've been mad, like the most of us..."