Why can a badly wired house be fine for a year, 2 year, 5 years and then all of a sudden short out and burn the whole house down? Because badly wired and overloaded is badly designed and overloaded. It may take 20 years of nothing changing or it may take 2 weeks or it may never happen. You've been given answers on what it could be and it more than likely is, but you don't like it. Try running your stock power supply, try borrowing a good power supply from a friend or keep freezing up. Your choice.