Parallels Just Stopped Working

I had a problem with windows XP and had to run a repair disk to correct the problem. Windows runs fine if I boot up my mac as a windows machine, but parallels goes so far and then stops.

 

Please specify the version and build of Parallels Desktop. As well please describe in detail please, how doe Parallels stop? Any error messages? Blue screen, maybe? And please go to your 'Finder'->'Documents'->'Parallels'->'Your virtual machine name' folder. What can you see there?