hey guys.

i made my own computer today, everything is sweet.

my issue is after i press on button it starts for 3 seconds, fans and all working, then dies? iv checked all conection several times and the mobo says that the jumpers are set for normal use and changing them will mess things up.the HDD is sata and theres only one so no issues there, only one cd/dvd drive.ect any ideas?

do i need to do anything apon very first boot?

cheers.