Clearing previously applied GPO settings from a domain laptop

We have a fleet of laptops within our domain, and some of the GPO settings applied to them are causing VPN functionality issues.
We have created new GPOs which do not have the issue, however when we move the laptops to the new OU it seems like the previous problemmatic GPO settings are cached and remain in play. If we deploy a new laptop in the new OU with the new GPOs we have no problems.

I need to be able to clear out the old settings without removing the machine from the domain, or reimaging the laptops.

I have tried this script with success on only one out of 4 laptops, perhaps someone can help me figure out what's missing or incorrect. I created this from info found all over the web.

Any help is much appreciated!

DEL /S /F /Q "%ALLUSERSPROFILE%\Application Data\Microsoft\Group Policy\History\*.*"
REG DELETE HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies /f
REG DELETE HKLM\SOFTWARE\Policies\Microsoft /f
REG DELETE HKLM\SOFTWARE\Policies\Microsoft /f
REG DELETE "HKCU\Software\Microsoft\Windows\Currentversion\Group Policy Objects" /f
REG DELETE HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies /f
DEL /F /Q C:\WINDOWS\security\Database\secedit.sdb
Klist purge
gpupdate /force
gpupdate /force /boot
gpupdate /boot

I get some 'partial' errors when I run it:

C:\Users\michsmit\Desktop>gpclear.bat

C:\Users\michsmit\Desktop>DEL /S /F /Q "C:\ProgramData\Application Data\Microsof
t\Group Policy\History\*.*"
Deleted file - C:\ProgramData\Application Data\Microsoft\Group Policy\History\{0
6941B5C-7B72-4690-BBCB-00B58A93DB96}\Machine\Preferences\Registry\Registry.xml
Deleted file - C:\ProgramData\Application Data\Microsoft\Group Policy\History\{9
61FFDE4-84B1-4F5D-8C66-F787823C1496}\Machine\Preferences\Groups\Groups.xml
Deleted file - C:\ProgramData\Application Data\Microsoft\Group Policy\History\{C
39202D9-A82F-43E4-8364-19F182F07FBE}\Machine\Preferences\Registry\Registry.xml

C:\Users\michsmit\Desktop>REG DELETE HKLM\SOFTWARE\Microsoft\Windows\CurrentVers
ion\Policies /f
The operation completed successfully.

C:\Users\michsmit\Desktop>REG DELETE HKLM\SOFTWARE\Policies\Microsoft /f
ERROR: Delete request is partially completed.

C:\Users\michsmit\Desktop>REG DELETE HKLM\SOFTWARE\Policies\Microsoft /f
ERROR: Delete request is partially completed.

C:\Users\michsmit\Desktop>REG DELETE "HKCU\Software\Microsoft\Windows\Currentver
sion\Group Policy Objects" /f
ERROR: The system was unable to find the specified registry key or value.

C:\Users\michsmit\Desktop>REG DELETE HKCU\SOFTWARE\Microsoft\Windows\CurrentVers
ion\Policies /f
The operation completed successfully.

C:\Users\michsmit\Desktop>DEL /F /Q C:\WINDOWS\security\Database\secedit.sdb

C:\Users\michsmit\Desktop>Klist purge

Current LogonId is 0:0x9c423
        Deleting all tickets:
        Ticket(s) purged!

C:\Users\michsmit\Desktop>gpupdate /force
Updating Policy...

User Policy update has completed successfully.
Mike SmithAsked:
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joinaunionCommented:
Have you tried removing the group polices folders? Then reboot and apply new GPO upon reboot.
http://www.sevenforums.com/tutorials/214461-local-group-policy-reset-default.html
Mike SmithAuthor Commented:
Good comment, I have since added these two lines to the script but sadly those folders to not exist on the filesystem.
joinaunionCommented:
Are you certain UAC is not coming on?
Do you have anything in event log you can post/upload?
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Mike SmithAuthor Commented:
Unfortunately nothing shows up in the event log, it's possible it's UAC related though.

The current GPOs in the current OU work on a new imaged machine, but these 2 test machines that had the 'bad' gpo settings from the production OU somehow cached even after moving it, running the deletion scripts, updating gpos using gpupdate -- they still don't work.
Mike SmithAuthor Commented:
I believe it turned out that this was a replication issue of GPOs along with a incompatibility with checkpoint vpn software.

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joinaunionCommented:
So you have resolved the issue?
Mike SmithAuthor Commented:
we figured it out at long last
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