Can anyone help me with my TV resolution problem?

I use my 1080p tv to play games on cuz my moniter is crappy but alot of games wont run because my tv doesnt recognize the resolution so most the times i have to find a way to force a game into windowed mode and change to resolution to 1920-1080 which my tv supports then i can play the game in full screen. But i recently downloaded a game thats not possible to play in windowed mode so i was wondering is their any way to find out what resolutions my tv supports?