Hi,
The Last Known Good Configuration feature is a recovery option that you can
use to start your computer by using the most recent settings that worked.
The Last Known Good Configuration feature restores registry information and
driver settings that were in effect the last time the computer started
successfully. Use the Last Known Good Configuration feature when you cannot
start Windows XP after you make a change to your computer, or when you
suspect that a change that you just made may cause a problem. For example,
you can use this feature if you cannot start Windows XP after you install a
new driver for your video adapter, or if you installed an incorrect driver
and have not yet restarted your computer.
When you start your computer by using the Last Known Good Configuration
feature, Windows XP restores information in the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet
Note : Any changes that were made to other registry keys remain.
With the Last Known Good Configuration feature, you can recover from
configuration problems such as newly installed drivers that may be
incorrect for your computer's hardware. It does not correct problems that
are caused by missing or corrupted drivers or files.
The Last Known Good Configuration feature uses information that is saved
from the last time that you shut down your computer to restore registry
settings and drivers. Therefore, you can use this feature only if you were
able to start your computer successfully before you restore your computer
by using the last known good configuration.
After you start your computer by using the Last Known Good Configuration
feature, changes that were made since the last successful startup are lost.
For further information access the URLs given below:
http://support.microsoft.com/default.aspx?kbid=315222#appliesto
http://support.microsoft.com/default.aspx?kbid=306084
http://support.microsoft.com/default.aspx?kbid=306546
Hope this helps.
S.Vijay
This posting is provided "AS IS" with no warranties, and confers no rights