Sophos Central Install issue - Error writing to registry

Good morning, 

I am hoping somebody on here may be able to help with this as we have exhausted all fixes on our end. 

We have totally removed Sophos Central from a PC after it had issues with some components not starting correctly. 

Now when running the install again we are getting the below results: 

21/02/2017,14:13:16,Information,------------------ Beginning installation of Sophos Anti-Virus and AutoUpdate ------------------,

21/02/2017,14:13:16,Information,Setup version 3.3.1.430,

21/02/2017,14:13:16,Information,Command line: c:\users\nmorton\appdata\local\temp\sophos_bootstrap\setup.exe -server mcs-cloudstation-eu-central-1.prod.hydra.sophos.com -token ***************** -edxtimestamp 20170208T151549Z,

21/02/2017,14:13:16,Information,Process security set successfully,

21/02/2017,14:13:16,Information,Setup program was run from C:\Users\nmorton\AppData\Local\Temp\sophos_bootstrap,

21/02/2017,14:13:16,Information,Checking system TMP paths.,

21/02/2017,14:13:16,Information,Checking TMP...,

21/02/2017,14:13:16,Information,Temp path for System found: 'C:\WINDOWS\TEMP'.,

21/02/2017,14:13:16,Information,Tamper protection is not installed,

21/02/2017,14:13:16,Information,Sophos Endpoint Defense is not installed,

21/02/2017,14:13:16,Information,Checking if Sophos Anti-Virus or Sophos AutoUpdate are installed...,

21/02/2017,14:13:16,Information,Starting wizard to collect information from user...,

21/02/2017,14:13:18,Information,Checking for internet connectivity...,

21/02/2017,14:13:18,Success,Successfully connected to the URL http://dci.sophosupd.com/.,

21/02/2017,14:13:18,Information,Checking for internet connectivity...,

21/02/2017,14:13:19,Success,Successfully connected to the URL https://mcs-cloudstation-eu-central-1.prod.hydra.sophos.com/sophos/management/ep.,

21/02/2017,14:13:25,Information,Starting the install sequence.,

21/02/2017,14:13:25,Information,Checking for local third-party software...,

21/02/2017,14:13:25,Information,Sending data back to Sophos...,

21/02/2017,14:13:25,Success,Successfully connected to the URL http://d1.sophosupd.com/ebs/3.3.1.430/2eTuFXrl7GJn1myFykbKW2NDJqg=/ezhBQzFGQzc5LTY4RUEtNEUxNi04NDI1LUZENUQ2QUVDMDYyOX0=/6.3.9600/1/e0Q2OEREQzNBLTgzMUYtNGZhZS05RTQ0LURBMTMyQzFBQ0Y0Nn0=/V2luZG93cyBEZWZlbmRlcg==/JVByb2dyYW1GaWxlcyVcV2luZG93cyBEZWZlbmRlclxNU0FTQ3VpLmV4ZQ==/JVByb2dyYW1GaWxlcyVcV2luZG93cyBEZWZlbmRlclxNc01wZW5nLmV4ZQ==/60100/x.xml.,

21/02/2017,14:13:25,Information,Done.,

21/02/2017,14:13:25,Information,Installing MSI...,

21/02/2017,14:13:25,Information,Copying ESCDP.dat...,

21/02/2017,14:13:25,Information,SAV not present, skipping install.,

21/02/2017,14:13:25,Information,Registering SAV with AutoUpdate...,

21/02/2017,14:13:25,ERROR,There was an unexpected problem with the installation of Sophos Endpoint Security and Control. Details: Problem creating registry key Software\Sophos\AutoUpdate\Products\{E17FE03B-0501-4aaa-BC69-0129D965F311} A Windows API call returned error 5,

21/02/2017,14:13:29,Information,Sending EBS feedback to Sophos...,

21/02/2017,14:13:29,Information,Sending data back to Sophos...,

21/02/2017,14:13:29,Success,Successfully connected to the URL http://d1.sophosupd.com/ebs/3.3.1.430/2eTuFXrl7GJn1myFykbKW2NDJqg=/ezhBQzFGQzc5LTY4RUEtNEUxNi04NDI1LUZENUQ2QUVDMDYyOX0=/6.3.9600/2/124/12/3/bWNzLWNsb3Vkc3RhdGlvbi1ldS1jZW50cmFsLTEucHJvZC5oeWRyYS5zb3Bob3MuY29t////x.xml.,

21/02/2017,14:13:29,Information,------------------ Found errors during installation: 124 ------------------,

21/02/2017,14:13:29,Information,------------------ Installation program finishing with code 124 ------------------,

The part highlighted in bold is the issue. Problem creating registry key. Does anybody have a suggestion on how to fix this? Otherwise we are looking at a total reload of the PC or possibly an alternative AV product. 

Thank you