Please will someone help me

for the last week or so my computer running xp service pack 3 has been stuck in a reboot loop.
It loads the BIOS, makes it's way to the chose OS screen(I had Vista on a separate partion til recently)I select XP Professional
It hits the Black Windows XP Screen with the loading bar, loads for a second or so, then restarts.
It won let me in any of the basic Safe modes
I've tried repairing for a XP cd
i've even went as far as to have a new MBR/Boot Sector Compiled

none have worked, but oddly enough i've managed to access it via one option...
Debug Mode
It will load up normally, and in fact im writing this while in debug mode, but i'de still like to fix this problem so i dont need to jump through hoops just to use my computer

Thanks ahead of time

Hmm, try this: How to Disable a Service or Device that Prevents Windows from Starting See if that helps.

try to run check disk if you right click on your hardrive icon in xp its in tools error checking,

check off both boxes and itll run when you start up your pc again..

It will take a little while,