I bought a brand new Samsung 330 Series 3 LCD HDTV and a 6' Dynex DVI to HDMI converter to use my TV as a monitor. I get home, my box is running fine, so I shut it down and set up the TV. I connect the DVI and HDMI ends and turn my computer on. No signal. After ruling out the TV as the problem I take out the DVI cable and plug my old 17'' LCD monitor back into my box using a DVI to VGA converter. No signal from either DVI port. I even bring in a 3rd 22''LCD monitor to test that on both DVI ports and nothing. I open the box and remove my Nvidia 8800 GTS graphics card and try the dedicated VGA graphics on the motherboard. No signal. I put everything back in its place and now I'm here. Does anyone have any ideas what could have happened between my box running fine all day to outputting no signal? When I turn it on with the 2 monitors and the 1 tv is recognizes that it is connected to something, but receiving no signal. I see no BIOS bootup screen or anything. When I boot up with the box open its clear that everything is at least "running" with some power going through it, hard drives, graphics cards, fans, are all going. I'm at a lost for ideas as to what happened to my box. Did I blow something inside by simply plugging in the converter cable!? Edit: Also, when I hit the power button it shuts right down, as if it hasn't booted anything at all. I hit the power and it turns right off.