Today when i started my pc,, all the display was greenish...
I tried the RESTORE and DEGAUSS button on my monitor, but it didn't help??
pls tell me wat to do??????

Degauss? Are we talking about an old CRT? If so, the greeness can becaused by a bent pin in the connector or the tube itself beginning to die. If the pins in its VGA cable are ok, then it's time to replace it!