Hi

Games used to play just fine, but recently the computer crashes every time my son trys to play a game, even when playing runescape online. Sometimes it will say that the .exe file has encountered a problem and needs to shut down, othertimes it just switches off and reboots constantly. The computer is only 8mths old so I'm hoping graphics card isn't out of date. the video card(is this the graphics card?) is an ATI RADEON 9200 Series, I'm using windows xp home edition and the processor is intel pentium 4 3ghz. Any ideas as to what might be wrong?