Computer just won't start

Ranygamer12

Honorable
Jan 16, 2013
12
0
10,510
Specs
Amd apu a8 3870k black
8gbs corsair vengeance 1600mz
Ga a75m d2h
Basicaly I was playing planetside 2 and then my computer suddenly cut out. So I turned off the power supply and at the mains crossed my finger and turned it back on. All I got was a blue light that lasted half a second and then nothing happened. So I check to see if the powersupply had died but after a few test it seems to still be in working order. Now I don't know if my motherboard is broke or the processor and if they are will I be able to get a new one under the 1 year guarantee
Sorry if this is in the wrong section because the is no I don't have a clue section