Dell Studio laptop got switched off abruptly and no longer turns on

[harisharumalla]

I am using Dell Studio laptop and worked fine for 1.5 years but suddenly one day when I connect my portable hard disk / pen drive after the it is turned on, system got powered off abruptly. After that system monitor is not getting switched on but turn on/off button led is glowing.

What would be the problem?
Please someone suggest me the solution.

 

[Leeky]

Does the laptop sound like it is powering up OK? e.g. can you near the CPU fan running, if you listen closely underneath can you hear the hard disk working?

What exactly happens when you press the power button?
Do you see the display light up slightly, but nothing show?