ok thanks, that helps
insert + boot from your xp disk
press "R" to enter recovery console
type the following (without the quotes)
'/chkdsk'
'/fixboot' press enter
'/fixmbr' press enter
then, type '/exit' and press enter
remove the xp cd from your cd drive,
i would have thaught a repair install would have fixed it....
if your computer still does not boot, unplug any unessential hardware (printer, modem, any other usb device...) then try to boot up your computer
did you have an anti-virus installed that you ran regually?
Hope this helps
Mike