Laptop neither turn on nor gets charged

I have an Acer laptop and all of a sudden its not getting turned on, its neither getting charged.
It was working fine the previous night and all of a sudden tonite it won't work.
Things I have tried:
Changed charging adapter
Tested the battery- working fine
Static electricity test by pressing power button....
Removed battery and tried only with ac.

If I plug it to charge the rear side is getting heated.
The charging led on my laptop is very dim upon charging.
Any help is very much appreciated..