computer monitor

[kezies]

i recently changed the video resolution on my computer and now the screen is blank even though the computer is on and working in the background

[soybean]

start in Safe mode and change your resolution back to a setting known to work.  Then, you can restart in normal mode and experiment with resolution settings.  If the same problem occurs again, go back to Safe mode and reset again.

[kezies]

Thanks for ur input.I tried that yesterday but the problem is that the computer screen is completely dark. Cannot see on the screen whatever I am doing on the keyboard

[computeruler]

what moniter and what resolution

[soybean]

And, you did start in Safe mode, right?  You know how to start in Safe mode?  Please explain the technique so we know you know how to do it.

[Carbon Dudeoxide]

but the problem is that the computer screen is completely dark.

One more thing: Do you see the windows Logo (with the scrolling bar)?

[believer]

what type of cable are you using...VGA,DVI?

I know in DVI it will not show you the boot up so you cannot even selct safe mode. If this is the case you need to connect an S video cable or VGA so you can see boot sequence; enter safe mode on boot up by hitting F8.