Windows 7: Computer crashes while installing Windows 7 and playing WC3

My newly bought (this month) computer froze many times while I was playing Warcraft 3.

It even froze when I was installing Windows 7.

Strangely, it doesn't freeze if I'm playing Left 4 Dead 2.


Btw, there is no blue screen. The screen simply freezes.

Welcome,

May be memory, test memory with memtest86.
http://memtest.org/

Make sure that you have up to date drivers and cards.

Be sure that the game is fully compatible.
Use Microsoft Compatibilty Center.
http://www.microsoft.com/windows/com...s/default.aspx

Make sure the compuer is not overheating during the game.