Another Display not working...

IxBuzzinsIx

Honorable
Jan 16, 2014
3
0
10,510
I'm posting this from a tablet, so please forgive any mistakes...
I just installed 4GBs of RAM, and now my monitor won't display anything, however if I disconnect the VGA it will say "no input"

All of the fans are functional, however my hard drives aren't making any quiet noises. (Maybe I knocked a wire loose when I installed the RAM, but I doubt it.) And no lights are on at the front.
I've tried removing the installed RAM and putting my old one back in, but to no avail, I've also tried a different monitor; which also didn't work.

I have an Asus M5A 78L-ME LX mobo and I'm trying to install 2x2GB Corsair XMS3 DDR3s (CMX4GX3M2A1600C9) and if it helps I have a GeForce GT 620 graphics card.
Also I'm running Win7 64bit.
Not sure of what else I can add other than I've had no previous problems with my display.
I've been to other forums and whatnot, but no one seems to have quite the same problem as me.

Please help!