Black screen and thats it :(

[kris0007]

hi guys.can u help me somehow??when i turn on my sony laptop screen stays still black..u cant hear it the music or any sound from laptop..and 3 lights on the right side are on all the time...bt it looks than is workin coz the lights on the bootom shows that the laptop is on,wifi is on,i can opened the cd drive..what can be wrong??please help

[kee-lo_]

Can you press F2 to get in the BIOS?

[Thalamus.]

Can you plug an external monitor into your vaio, if so do you see an image?