Sony Vaio - Power LED turns on but Screen remains blank

[Suneeth]

When I try to turn on my Sony Vaio the power led alone turns on, Screen remains blank. It doesn't even show VAIO screen. I am not able to tun off the laptop as well as holding down the power button doesn't seem to work. I have tried with a new hard disk and also I tried cleaning the RAM and reinserting it. But nothing seems to work.

 

[BadAsAl]

Can you hook it up to an external monitor to see if you get anything on that? You may have to hit a key or combination of keys to get it to display on the external monitor. If it doesn't show on external monitor either then likely a problem with your graphics card, your processor, or your motherboard.