C:\ProgramData\GPoS Data
C:\ProgramData\GPoS Mobile Data
C:\Program Files\Verifone
C:\ProgramData\Verifone
HKLM\SOFTWARE\Fidelity Systems
HKLM\SOFTWARE\Wow6432Node\FidelitySystems (on 64 bit versions of Windows)
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability
HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Reliability (on 64 bit versions of Windows)
UAC needs to be disabled, and GPoS needs to be run as Administrator for the first time.