no display or also not show no signal on monitor

Dear Friend

I have compaq crt monitor its not giving display i chacked my machine by connecting other monitor its working but this compaq 1 is not giving display ..power led shows amber color lightwhen it is connected to monitor i checked vga plug to se any pin is bent but it is ok

Also if VGA Cable is disconnectedthen it should show somemessage like No signal Available…or other but nothing

Please Help