I am trying to get my connect my main PC to my TV via HMDI, but all I get is a black screen with no video available. However when I take the HDMI cable out and put it into my mITX PC I get a signal and everything works fine. When connected to the mITX PC via HDMI my control panel says 1.19W_LCD_TV, but when connected to my main pc, it say generic Non-PnP Monitor. Anyone know why this is?