GPO Reset By PowerShell

Bulk Reset Group Policy Settings PS:
(gpedit.msc)
Remove-Item -Path "C:\Windows\System32\GroupPolicy\*" -Force -Recurse
Remove-Item -Path "C:\Windows\System32\GroupPolicyUsers\*" -Force -Recurse
gpupdate /force

Reset Local Security Policy Settings to Default in Windows CMD:
(secpol.msc)
secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose

Log Wiew:
%windir%\security\logs\scesrv.log for detail info.