Installed a new identical motherboard. Original was dead after a water spill. On first power up everything comes back to life but the video. The monitor says "no signal", just like it would if you unplugged the monitor cable while in use. Initially I did not install the old video card. I figured I'd try the on board video to finish the tune up before installing the graphics card. "No signal". I did install the graphics card to check: same result: "no signal" All the components seem to be working, making appropriate noises, fans running, but no signal to the monitor. Any suggestions on what to do next would be appreciated, thanks!