So for Christmas I got computer parts, I put the whole thing together, the PSU is in correctly, my dad actually did most of it and he was an engineer and know how to do this, the computer works, 2 beeps at start up, lights go on on the tower, the fans work, but the monitor, keyboard, and mouse all don't respond, my dad did some research I need the OS to recognize the monitor, keyboard, and mouse, but I need the BIOS to install the OS I need to install the BIOS, but to do that the computer needs to recognize the monitor, keyboard, and mouse, I was going the call the Video Card manufacturers tomorrow but I have no idea what is wrong, can ANYONE help?