When I turn the pc off (by hitting the power button on the System Unit) and then ON, the system <sounds>as if it is booting properly (the numlock light comes on and off; the display power light is green; I hear the familiar Windows chimes.) But I get nothing on my screen! After many minutes (like 40) the green light on the display turns to amber.
Whatever could have gone wrong? One minute everything was working, 30 minutes later (without anyone touching the system) my screen was dark. It is as if the CRT gun in a CRT burned out but of course this is not a CRT. ?????
a. Is it possible/likely that the electronics inside the display has conked out?
b. Is there some combination of keys that I accidentally hit that makes a screen go dark?
c. Any suggestions on what to try?
Desperately seeking guidance.