I've done hundreds if not more such installs. Every time I see that issue it's a hardware one.
http://forums.cnet.com/5208-19681_102-0.html?messageID=3196452&tag=forums06;posts#3196452 is something you have to do if the owner has not been doing their yearly work.
Bob
Installed Windows 7 Home Premium clean install ,computor runs 30-40 mins then shuts down,have to restart

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