My laptop (MSI GT70 WS) just got this problem where when I hit the power button, the power and HDD led lights up and the fan spins then everything shuts off. Then after a couple of seconds it turns on by itself, goes through the same process again and then shuts off. I runs in this loop over and over again and doesn't stop. I got it stop by timing when it will turn on and at that point hit and hold the power button until it shut down. I need help in getting this fixed. I really need this computer.
Two possibilities. The first is that the RAM stick is defective. fix this by trying out a single working stick in each slot. If the problem persists you have a faulty motherboard which would need to be replaced.