None.

[Tony CR]

Hi!
I have a nVidia graphics card and a Samsung LCD monitor, with Windows XP ServicePack3.

Formerly, I couldn't use the 32 bits color, nor list the monitor.
Then I tried to fix it, but made some mistake: I changed properties, from System to Auto.
Now, I have no image in my monitor.
I checked everything: no motherboard problem, no monitor problem, no disk problem, no memory problem. It is a software problem!

What can I do to revert the error? Yes, I have no display.
Would it work if I reset the BIOS?
Thank you!

 

[blackwidow_rsa]

can you still see the bios, windows loading screen,etc? try logging in in safe mode (press f8 just before windows starts loading) and revert back what you 'fixed'

 

[Tony CR]

No, I cannot log in safe mode.
But thank you for your help!
(and you are right: I made a big, big mistake...).

 

[morfinel]

maybe u have removed ur graphic drives, restart bios with removing that small battery in motherboard and putting it back in as well check if ur graphic card is correctly placed in slot and there is no dust as well alternative would be to reinstall windows, try connecting different monitor if u have one and is the windows running ?? with monitor beeing switched off

 

[rangers]

why cant you get into safemode

 

[Tony CR]

Well, Rangers, I cannot see what's going in Windows, since I have no display (all black). So, I cannot log in in safe mode.
Thank you.