Monitor Display. This morning I tried turning on my e-machine, the fan kicks on and it sounds like

Question

This morning I tried turning on my e-machine, the fan kicks on and it sounds like it's on and the lights go on. The monitor turns on (i see the Welcome screen that always occurs when you turn it on) but then it says signal missing and it won't work. I've checked all the plugs and turned off everything and unplugged all and replugged to no avail. I need this to get my homework for my night class. Help!! It's less than a year old so it's not that i'ts that old either!