That means your chips are gone for sure…overheating is just another factor thats complicating the issue. Pretty much your machine will turn on initially until it gets too hot…causing the already messed up chips to go haywire…your machine turns off…you turn it back on and maybe just maybe it’ll run for a quick minute if that and turn right back off…you get your led lights to glow and the fan to kick on but no response from the computer itself as far as the hd booting up or the monitor kicking on. Foz had the same problem with his machine…determined it was bad chips on the mobo.