Blue Screen crashes during some stuff playing (games,videos)

[Courtney Rug]

I play games like World of Warcraft and watch videos on Youtube so far and get these blue screen crashes, almost everytime on videos and almost every few hours in World of Warcraft.

I use Motherboard: Biostar (idk what type my dad was the one who put it in and can't ask him either)
Power Supply: don't know kind either but it's set to 115
Graphics card: Nvidia Geforce 6200 version 307.83
It's windows 7 32 bit and ram is 2 gb

The blue screens last only about 2 - 3 secs so idk what they post in them
more info is the GPU tends to overheat but i have another fan cooling it atm don't have much money so js on that idk if the GPU needs replaced or not

 

[Courtney Rug]

Found out the model type of the motherboard it's a k8m800 micro am2