problems with my ps3. NEED HELP!

I took my ps3 to my friends house yesterday, then when i came home i tried to plug it back into my tv,

but i have no sound or audio?......the ps3 still comes on and so does my tv, but im not able to see or hear anything?

someone plz help me I HAVE NO CLUE WHAT COULD BE WRONG.

i've tried thata fewtimes. it still does the same old thing: power works but no sound or audio.

i've even tried hooking it up to another tv. also i used 3 diffrent sets of cords :(

opp, nevermind lol....i fixed it lol

man i feel like an idiot :P