Cannot uninstall or reinstall System Center Endpoint Protection on Client pc

I have two clients right now that seem stuck between the uninstall of Forefront and install of System Center Endpoint Protection.

Clinets are running Windows 7 SP1 with SCCM 2012 R2 clients

Add/Remove programs have only SCEP no Forefront
When I try and uninstall SECP it says it can't find the needed files
When I try and install SCEP it says you cannot have more than one installation

I have tried rebooting, MSconfig to not load startup programs already.
Any ideas are greatly appreciated.
LBLCOAsked:
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LBLCOConnect With a Mentor Author Commented:
I have been trying to reinstall them. But yes one pc is just getting reimaged for sure. I may have to just reimage the other one too if I can't figure out the issue.
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hindsightCommented:
-Run Ccleaner to wipe out any leftover registry files of SCEP
-Reboot PC
-Uninstall SCEP if still on the list
-Download and run Revoinstaller if problem still persists

Let me know if this works.
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LBLCOAuthor Commented:
Will start there thanks!
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LBLCOAuthor Commented:
Unfortunately this did not work. Revo Uninstaller does not even see the SCEP program but Windows does.
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merowingerCommented:
Try running this command:
"%PROGRAMFILES%\Microsoft Security Client\Setup.exe" /x /u /s
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LBLCOAuthor Commented:
No dice unfortunately. What else we got?
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merowingerCommented:
When starting the scepinstall.exe is there an Option to choose uninstall?
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LBLCOAuthor Commented:
no it just say you cannot have two installations of this software. please unistall and try again. no options to uninstall.
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merowingerCommented:
Maybe time to reininstall them....faster than searching for the Problems more longer or?
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LBLCOAuthor Commented:
I am going to have to reimage the machine unfortunately. I have not found a solution which uninstalls the old SCEP to reinstall the new one. Thank you for all your help thuogh!.
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