Help! Mac Laptop Shutdown?

I have a year old Mac Laptop OX. It's been working fine since I got it. Today, about 30 minutes ago, I was on photobucket uploading some pictures and it shut down. I cannot get it to turn back on. I've tried pressing down that little circle button in the corner and I've tried plugging it in. The light on the computer cord is yellow rather than the usual green. Someone tell me please what happened here?? And how I can resolve it.

Kyle D2008-10-08T15:42:01Z

Favorite Answer

your power supply is shot. take it 2 an apple store 2 get it fixed or take out the battery, unscrew and take off the shell, and look. is there anything that looks that is came in contact with smoke? look at that