Solution:
Boot your computer. Do you have a frontend running? If so, hit alt-f4 once and wait a bit.
Code:
Ctrl-Alt-Del (give your computer at least 6 seconds to make task manager show up)
Alt-F
N
type "explorer"
Enter
Ok. Now you have the shell running.
Now, did you delete the MONITOR settings or the DISPLAY DRIVER settings? If you borked the monitor settings, follow below...
Code:
Now to get into Device Manager..
WindowsKey + Pause/Break
Ctrl + Tab
Ctrl + Tab
Alt-D (wait a little bit)
Tab
M
M
Right arrow key
Down arrow key
Delete (you should hear the error ding)
Space-bar
Space-bar again, it might want to reboot
You have now deleted your monitor settings. If windows is not already doing it, reboot
If you were fudging with your display drivers, (less likely)
Code:
WindowsKey + Pause/Break
Ctrl + Tab
Ctrl + Tab
Alt-D (wait a little bit)
Tab
D
D
Right arrow key
Down arrow key
Delete (you should hear the error ding)
Space-bar
Space-bar again, it might want to reboot
You have now deleted your display driver. Re-boot.
Try the first one. Of course if you think you fudged even one key during the process, re-boot and try again. At worst you could end up deleting drivers for something else (repairable)