Hi I have xp windows pro sp2 and now it won't load windows just get to the part whereit says windows didn't start right and then reboots over and over and won't load up xp, hope you can direct me somewhere or somehow to get my puter going normal again ty for your help

Perhaps you have a virus or malware problem?
Have you added any new hardware recently such as a graphics card? (remove it and try again if you have).

First thing to to is to boot-up in safe-mode: Usually this is done by repeatedly pressing the F8 key when you turn the PC on. This will probably get you into Windows and allow you to run anti-virus scans or try a System Restore.

If you still have no luck and you have a desktop computer (ie; not a laptop) borrow or buy a cheap hard-drive and install it in place of your present hard drive (set it to "master" by moving the jumper - the little plastic tab - as shown in the diagram on the drive) and install Windows on to it. If it doesn't work then it is likely to be a hardware problem.
Likely hardware faults are dust-bunnies clogging up the fan (easily remedied!) or a faulty RAM stick (buy a new one).