Hello,I'm newbie here, so i need some advice from all of you. My PC got some kind of problem. When I want to turn it on it turn on for a second or two and then it suddenly turn off followed by beeps like a police siren continuously. May I know what's wrong with my pc. When i looked at the fan it spin for a second and then turn off at the same time as the pc turn off.Here are my specsAMD athlon XP 2.8Abit AN7512 DDRATI Radeon 9550