overheating? power problem?

Hi,

Im looking for a bit of help if you dont mind. My Laptop has recently started crashing and i cant figure out what it is...

The mouse cursor will freeze and the machine switches itself off. It usually happens around 30 minutes after start up. I can usualy switch it straight back on, it never restarts. Its almost as though the power was cut.
From reading about similar problems here and on other sites I think it may be overheating? I've run Everset and the temps never go above 60, although running speedfan shows them slightly higher but never much higher, it seems to crash before they get that high!

Also,There are never any system alerts logged and i never get a blue screen,I have cleaned out the fans and they appear to be running fine.

im just a bit stuck as to where to go from here...
its a fujitsu siemens amilo p1536, running win XP sp 2, with a mobile dual core intel pentium m 1.66ghz... and is about 6 months out of warranty

any help or advice would be greatly appreciated...

Thanks a million!

 

Does it have a low battery indicator?
Does it shut down when connected to outlet power?

 

Sounds like the computer's been corrupted, perhaps by a virus or program. I would try running the system recovery cd if I were you.:major

 

thanks for replying,

battery power is fine, happens when mains is attached and when on battery. Not running anythig particularly demanding, word processing, pdf's, web browsing etc, no games, occasionaly videos, dvd's...