I just received this board and I am experiencing problems. My specs are in my signature, but I am of course using a different motherboard.

The PC will not POST. No beep codes are given and the screen and USB devices do not turn on. I have stripped down the PC to only the necessary parts. (No hard drives, one stick of memory in the yellow slot near the socket, and no other connections like for the USB bracket.) I cleared the BIOS just because it was the first power on. I get the proper beep code when I removed all the sticks of RAM. So I removed the VGA card from the blue slot and kept it out of the system, no beeps at all. (It said I should get one long beep with three short beeps if no video card was installed.) I moved the card into the black slot and the same thing, no beeps at all, just the same black screen with no video signal input. Anyone have a clue what might be the problem? I lost two screws that hold the motherboard to the case. Are those screws needed to ground components as well as secure the board?