No display on monitor

Hello,

So my computer's been a mess for a week. When I turn my computer on, it turns on fine: you can hear the fan, the usual beeps sound off, etc. But there is no display on the monitor. The light on the monitor works fine, showing that it's on, but there is no display. I tried connecting my computer to my television, and it worked fine, so I'm guessing it's my monitor. Does this mean I have to replace my monitor or is there a way I can fix it?