BSOD when open Windows Parallel

I have a MAC OS X and installed Parallels which worked fine until today.
The parallels desktop that I installed is a 3.0. When I open parallels, it does not open the Windows XP program, all I get is that black screen and says that the virtual machine is running but never opens. Any suggestions?

 

hello,
please check the following articles:

http://kb.parallels.com/en/5062
http://kb.parallels.com/en/5021
hope they will help you.