Aspire AZ1620-UR31P video issue

I have an Acer Aspire AZ1620-UR31P. It powers on just fine, but is not receiving a video signal. The monitor displays "No Signal Detected". I have taken it apart, removed the small video cable and then plugged it back in to make sure it wasn't just a bad connection...still not working. The PC does seem to be booting (the HDD activity light blinks after a few seconds like it's loading Windows, plus I can turn on and off the CAPS LED), so I am assuming that everything is actually working on the motherboard & CPU/GPU. I would like to try another video cable, but cannot find one anywhere (though there is one on Ebay for $30, but that seems a bit excessive...and the part comes AS-IS! I have also tried hooking up an external monitor, but there are not ports to do so. Can anyone give me any other things to try and troubleshoot?