Rebuilding a computer using new and re-used parts and there is no video output to the monitor. I am using the onboard video. When I switch the psu on, the green led on the motherboard lights up. When I press the computer power switch, cpu fans spins up and stays on. I wait but monitor stays blank. Here's what I"ve done and tried so far: -I tried the VGA, HDMI, and DVI video outputs. -cleared CMOS. -installed memory in pairs, in both slots, and single in all slots. -I tried to boot with no memory. Even if I had bad memory would I be able to get to POST and then to BIOS? -removed all parts except cpu, cpu fan, psu power cables, and ram. Here are my specs: Phenom II 550 (reusing from old build) Asus M4A785TD-M EVO rev. 1.02G (bought used, new to me) Corsair 620HX (bought from friend, new to me) Super Talent DDR3 1600 2x1GB CL7 1.8v W1600UX2PG (new, but not listed as supported ram) Acer with HDMI, VGA, DVI inputs (reusing from old build) I don't have a motherboard speaker so I don't know if there are any beeps going off, but will try to get one soon. In the meantime is there anything I can try or is there a way to find out what BIOS version is installed? While I wait for responses I'll try a crt monitor, and maybe breadbox. Pretty frustrating but hopefully someone can help me figure this out. If you need any more info to diagnose the problem please let me know.