Finally rozarguns says something sensible. hw = hardware. I would tell you to boot to a command prompt and delete the hibernation file but that's too much typing for the internet.
Maybe its going into Hibernation because the battery is bad, low and not recharging.
Or the hibernation software is screwed. Booting into safe mode will get past that to see if it stays up or not.
Try removing the battery and starting it up with the AC cord plugged in if it will let you.
That will eliminate the battery as the cause.
Then try a different power cord if you have one in case the one you are using is bad.
Maybe its going into Hibernation because the battery is bad, low and not recharging.
Or the hibernation software is screwed. Booting into safe mode will get past that to see if it stays up or not.
Try removing the battery and starting it up with the AC cord plugged in if it will let you.
That will eliminate the battery as the cause.
Then try a different power cord if you have one in case the one you are using is bad.
+1
This should be ur very first step
turn computer on andstart taping repeatedly on F8, when the options menu appears select "safe mode", if it doesn't work do the same but instead of safe mode select "Last known good configuration"
Let us know if it takes you into safe mode normally or not to determine a possible next step....