Recently installed an Amd Athlon x4 760k on an Msi MS-7778 REV. 1 motherboard. (replacing an A6-5400k) Made sure that I applied enough Thermal Paste, even used the old heatsink, made sure it was plugged in. When I turn it on, The monitor has no signal, and the Keyboard doesnt light up. Cpu and video card fans are running perfectly. Any reason as to why this is happening? made sure my Motherboard is FM2 socket and so is the new CPU. I cant find any manuals of my specific motherboard model online.