How to
undo the changes made to the Registry?
If the
changes you made in the registry caused
your computer to fail, BSOD or stop
responding, and you cannot restart it as
usual, you could use the Last Known Good
in Windows 2000/XP/2003 configuration as
long as you did NOT log on AFTER you
made the changes.
For
example, if you made some changes to the
registry, such as disabling a service or
a driver, and these changes cause your
system to become unstable, do NOT try to
restart and log on to fix the problems!
Instead, restart your computer into Safe
Mode in Windows 2000/XP/2003 and see if
you can fix it up.
Do NOT
attempt to boot normally and log on,
because if you do so, the previous Last
Known Good configuration (the one that
was created BEFORE you made the bad
changes) will be overwritten by the bad
registry, and you will not be able to
revert back to the previous
configuration.
So if you
still can't fix things up, shut your
computer down and try Last Known Good
configuration.
To restore
your registry to it's last configuration
follow these steps:
-
Restart your computer.
-
When
you see the message Please select
the operating system to start, press
F8.
-
Use
the arrow keys to highlight Last
Known Good Configuration, and then
press ENTER.
-
NUM
LOCK must be off before the arrow
keys on the numeric keypad will
function.
-
Use
the arrow keys to highlight an
operating system, and then press
ENTER.
Important note:
Choosing Last Known Good Configuration
provides a way to recover from problems
such as a newly added driver that may be
incorrect for your hardware. It does not
solve problems caused by corrupted or
missing drivers or files.
When you
choose Last Known Good Configuration,
Windows restores information in registry
key HKLM\System\CurrentControlSet
only. Any changes you have made in other
registry keys remain. |
