when i play games these black shapes and colours sometimes flash everywhere anybody got any ideas my graphic card is a Geforcefx 5200 256mb.

Just make sure all your graphics card and DirectX drivers are up to date and if the problem persists, check your card isn’t over heating. Most new cards come with temperature monitoring software, if yours didn’t you should be able to download some or at least check the cooling fans attached to the card are still spinning.

Sounds like your card is over heating like Gabriel said that could be the problem for the black shapes! Do you have any Case Fans cooling your system?

No there isnt any case fans but the graphic card has it own fan.