$SecMan = Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\uninstall\*' -ErrorAction SilentlyContinue | Where-Object {((Get-ItemProperty -Path $_.PsPath) -match 'HP Client Security Manager')}
$secmanCode = $Secman.modifypath | Out-String
$secmanRemove = $secmanCode.substring(14).Trim()

Start-process msiexec.exe -argumentlist /x, $SecManRemove, /quiet -wait