I am having a power problem i had 2 desktop pcs one was built by a friend the other was purchased online. The first one the power supply completely went out in 7 months i had to buy a new one the flipper switched i even had it on a surge protector and it didn't save it. This new pc i just bought it shutting off unexpectedly i don't know why i am having such power problems. I plugged first time in surge protector and the other in the outlet it shut off both times. Any advice?