It's the first time I'm posting on troubleshooting forums like this. I'm fed up of this problem and I don't know what to do next. Since I first installed a fresh copy of windows xp after building the pc myself, I've been getting repetitive BSOD's. I've done some 2 to 3 formats at first to no use, as they keep appearing every now and then. The most common error was DRIVER_IRQL_NOT_LESS_OR_EQUAL. But sometimes other errors shown up. Now the blue screen doesn't let me see what type of error it is. This happens even when I'm just surfing the net or chatting. I attached some dump files for you experts to see, as I don't understand them.