Your computer shouldn't freeze... It seems that either your hardware is overheating or that your windows installation needs to be redone...

If your computer overheats, that means your computer would crash on 3D games too. -> you need cooling in your computer case

If your windows installation is fubared, well you can always try to update your windows with Windows Update and get the latest graphic drivers, clean up with anti-spyware, anti-virus... But if that doesn't work -> you'll need to reinstall windows

Ciao

__________________
Liens d'intérêt /Links of interest:
Gnutellaforums en français /The House's rules you have to respect / First search the forum, then create a thread / Free software alternatives! - Logiciels alternatifs gratuits!/