My Acer LCD Monitor shows the , auto Configuration menu and is on a black screen.

Try uncheck Auto configuration when you right click on desktop and choose screen resolution menu.

See this...

Restore to Last Known Good Configuration:

To use the Last Known Good Configuration feature, first restart the computer by pressing [Ctrl][Alt][Delete]. When you see the message Please select the operating system to start or hear the single beep, press [F8] to display the Windows Advanced Options menu. Select the Last Known Good Configuration item from the menu and press [Enter].

Keep in mind that you get only one shot with the Last KnownGood Configuration feature. In other words, if it fails to revive your WindowsXP on the first attempt, the backup copy is also corrupt.

Use system utility software like RegInOut after restarting windows.

auto configuration menu stays on monitor screen constantly while trying to use pc for normaluse.

Check the color settings in the on-screen menu. You can choose between "Warm", "Cool" and "User". Maybe you used the "Warm" setting before and somehow it got changed to "Cool".
If this is not the case, you can try the "User" mode and reduce the intensity of the blue channel.
If even black areas show a blue tint, maybe running an auto configuration from the menu helps.
As a last resort, use the "Reset" menu item which resets all settings to factory defaults.

select f8 to enter advance menu. on advance menu
select last known good configuration. allow unit to boot. if this fails you will need to do a system repair with your windows disk.

Here is a link to get the manual:

http://www.acerpanam.com/synapse/data/7117/documents/X193W%20(Qisda)%20user's%20manual.pdf

Starting on page 15 are the directions for the monitor controls. Page 17 indicates a "RESET" feture to Clear the Old-Statuses of "Auto-Configuration". There are quite a number of setting for this monitor.

Burned out backlight fluorescent backlight.

Check your settings in "Power Options Properties".
Control panel/ power options/ advanced/ under power buttons make sure you have "shut down" when you press the power button on your computer.
I hope I am understanding your problem correctly. If not pls. explain what you mean by and when processing auto config. keeps flashing. Is there a black screen or a windows interface?

What operating system do you use? If it is a windows OS press F8 while the system is booting to access the Boot Manager, choose to boot to last known good configuration and if this does not work retry but select safe mode and change the resolution back to the previous one.