OK Hive mind. I give up. I've been banging my head against this problem for hours and now I find myself, humbly, looking for guidance.
So I just got a nice LG 42" or so TV for free since a ton of them were donated to my work. I don't really watch a lot of TV aside from on my computer, so I decided to try and set it up as my monitor.
Here's the problem. I can't seem to get the resolution to go any higher than 1024x768. I feel that this shouldn't be the case.
I'm running Windows 7 x64. The graphics card is a (what I understand to be fairly decent) NVIDA GeForce 7900 GTX. I'm running that with a DVI-HDMI cable to the TV.
I tried installing the latest drivers for the graphics card. But even from its fancy-little control panel thingy, the highest resolution available is 1024x768 (native). (addendum: I know enough about what I'm doing to know that "native" indicates something important, but I'm not yet quite sure what)
To confound matters further, as I was fumbling with my connections like a 12 year old trying to undo a bra for the first time, there was a strange occurrence. When I switched the DVI plug from one input to the other (the graphics card seems to have two of them), the options on the screen changed. I was rewarded for my fumblings with a vast list of resolution options to play with. Briefly, I rejoiced.
However, to my frustration, most of those tantalizing resolution settings remained beyond my reach, as selecting them would only cause the screen to go black, and the words "no input" to dance merrily around my screen, mocking me. In the end, the only new settings I could use were 1152x768 and 1280x854, which struck me as a small improvement, although soured by the fact that everything was unpleasantly squished. I suspect that to be due to the fact that both of those resolutions are intended for a 3:2 aspect ratio thank you wikipedia
whereas my TV can be set only to 16:9 or 4:3. I suppose I should have settled for one of them but I continued to poke and prod and fiddle and fumble with settings like a horse attempting hand surgery, and now both DVI inputs yield naught but the disheartening resolution of 1024x768 and it's vile lackey, 800x600.
If I can't figure this out, then I suppose I'll just procure a SNES or something to make the TV useful, and return to my more modestly sized monitor. But perhaps, with the help of the hive mind, my nerdy and over-sized ambitions can be realized.