BlackFrozenScreen during gameplay

Everytime i play about 2 or 3 games in my screen will freeze and go into a blackscreen, my first thought was it was overheating, but it only got to about 65c which is bareable.

these are my specs ( very old laptop)

intel pentium m 1.6ghz
ati mobility radeon 9000
1gb ram
40 gb harddrive

ive tryed updating and reinstall all drivers it seems to do nothing, i still think it might be an overheating issue but it SEEMS to only go to 65c. this has been happening to me for about 10 months haha.


EDIT: ive tryed underclocking/undervolting my cpu ,gpu and memory to help this but im not getting any results, AND i have a desktop fan running behind my laptop to cool it down, doesnt seem to do much.

im trying to save this laptop as far as i can before i buy a new computer.


really need help D:

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