Please someone help me... I've got a Carrera 253cb win xp geforce ti 4200. I'v been trying to play games on it ie age of empires and a chopper sim but after about 15 mins pc crashes sent error report to microsoft but all it says is that its an unknown device driver. been on phone to carrere when i found out that pc had no dvd software (by mistake) they say. told that this is the prob having doubts . why does game play for so long then crash without dvd software and does anyone think software will make a difference ?