My laptop keeps hibernating?

Even when i use it it hibernates & I can get it out of hibernation unless I turn it of by unplugging the ac & battery.
It says that it hibernates cuz it is over heading & so times it does it. It's been doing this for a month now. I have no viruses. I got my laptop in December after Christmas of 2009 or January of 2010.
My laptop sits on this portable desk.


























ASUS G75 Battery
Sony VAIO VPCZ128GG Charger

Hello
Sorry for my english, i speak a little bit but not very well.

The first solution is to turn off Hibernative mode.
or reinstall windows and see if the problem still exists

And the ultime solution : may be should you flash the bios?



Sena, bibou member, thinks this :

Citation :

We would like more details of your trouble:
*What is the brand, model of your laptop ?
*Can you hear the fan spinning ?
*Is the hot air blown out of the vents ?

the possibilities of an overheating laptop are:
- a clogged heatsink: when you cold-start your computer, the fan starts spinning faster and faster, but the air can be barely felt when you place your hand in front of vents;
- a worn-out thermal compound: if someone dismantled the heatsink for cleaning, the old thermal paste MUST be cleaned out and a new one must be applied. Aso after some years of use most of thermal compounds tends to become dried-out and don't conduct heat anymore;
- a faulty fan : in that case you cannot hear the fan spinning, the hot air is not blown out of vents;

For the first case, you can try to blow the dust through vents with a compressed air can. If the heatsink is not too clogged, it may help.

For all the others, unless you have skills and tools, it would be better to ask a qualified tech to service your laptop.
Don't try to disassemble yourself, unless you know what you do.