how to make my tv work again?

I have a 42 inch lg plasma. One day, the screen froze and wouldn't let me change the channel or anything. After a couple minutes of trying to turn it off, i decided to just unplug it. When i plugged it back in, it had a message bouncing around the screen saying "french". When i tried to press any of the buttons on the bottom of the tv, it flashes "DVD HT". I have looked all over the web trying to find something, but it seems noone else has ever had this problem. I'm pretty handy, so if i can figure out what needs to be fixed, i'm sure i can do it myself. Please help, somebody, and no stupid answers please.