My PC begun to shut down automatically after CPU upgrade

mati_motorloco

Honorable
Dec 9, 2013
16
0
10,510
Hello everyone, I have the following problem and hope you can help me

first, I'll provide my PC specs

WIN7 32

MOBO GEFORCE 6100sm-m
CPU AMD Athlon 64 X2 5000+ @2.7GHZ
GPU GEFORCE GT220 1GB DDR3
2.5GB RAM DDR2

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I upgraded my old CPU AMD Athlon 64 X2 3800+ for an AMD Athlon 64 X2 5000+ and I have been having problems

when playing games like CRYSIS 2 at 1366x768 with everything HIGH the game plays for a couple of minutes but then the PC shuts down, the same happens with GTA IV (I have to play with everything in LOW to prevent rebooting)

I would like to say that the shut downs DO NOT HAPPEN when playing SKYRIM (very high and 1366x768) or FIFA 14 (high, x4 AA and 1600x900), just with "heavy" games like GTAIV or CRYSIS 2

I think this is due to my CPU upgrade, could be something related to my power-supply (450wtts, generic) or something else, what should I do?

thanks in advance!