I have described everything in detail at superuser. Couldn't get anyone to help me there. Can anyone help me here ? Here is the link.
http://superuser.com/questions/16236...hen-plugged-in
I have tried loading ubuntu with the boot options noapic and apm=off and both options didn't help. I can't take my laptop to a shop for a few months (money ). Can you'll help me to extend the time for which the laptop stays up.