inestable

My build suddenly stopped working, and a friend of mine lent me two motherboards he had to test. The components in question are CPU: FX 6300 PSU: EVGA 600B Motherboards: - The one I was using: Asus M5A78L-M LX3 (let's call it A), - One from my friend: Asus M5A78L-M LX V2 (B) - Another...