My computer turn off by itself when i play a game

[looklikemeable]

When I play cityville on my computer is shut itself off. What can I do?

 

[Wisecracker]

Exorcise Yer Demons

We need complete specs on your machine (including temps under load), and any measures you have taken to fix yer problems.

A simple stress test and an outline of your voltages/temps is a good place to start.

 

[mdd1963]

80% chance of 'instant power-off' syndrome being caused by a 550/600 watt no-name PSU actually being strained/overloaded by a 300 watt continuous load....