Can someone help me with my standby problem?!

Ok I've been searching and searching... but I can't seem to find an answer to my problem. I have a Toshiba A105 and recently it just started acting up. It doesn't go into standby anymore. It doesn't give error messages or anything you click standby.. nothing.. you shut the lid... it turns into a hot plate.

So any help.. at all.. cause this is really irritating.. I depend on standby to go from class to class and what not...



New News... I found I can't hibernate either.. I fiddled with the power settings I put both close the lid and pressing the button on hibernate and nothing. The only thing I can do is hold the power button to fully turn off the laptop. Nothing else works...

I running windows XP MC.. I dunno what happened one moment it's fine the next I shut my lid put it in my bookbag and woke to a very hot bookbag... and that's when I found out it doesn't do standby or hibernate... it doesn't even try... you click the standby button and it just goes one with it's life...