ARGOMENTO:

$ScriptHome="$env:ProgramData"
# install chocolatey package manager
$ChocolateyPath="$ScriptHome\chocolatey"
if (-Not (Test-Path $ChocolateyPath))
{
	echo "Installing chocolatey packages manager"
	# default installation folder C:\ProgramData\Chocolatey note C:\Users\All Users\ and C:\ProgramData\ are the same
	iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))
	refreshenv
	
	# necessary starting since chocolatey v0.10.0
	choco feature enable -n allowEmptyChecksums

	choco install -y 7zip	
}
# only for versions before windows 10
elseif ($OSMajorVersion -eq 6)
{
	echo "Updating powershell to latest version"
	choco install -y dotnet4.5.1
	choco install -y powershell
}

$ProgramsPath=${env:ProgramFiles}
$computerType=(Get-WmiObject -class Win32_ComputerSystem).PCSystemType
if ( -Not ($computerType -eq 10 -and $computerType -eq 9 -and $computerType -eq 8 -and $computerType -eq 11 -and $computerType -eq 14))
{
	choco install -y boinc
	$BOINCBAMURL="https://bam.boincstats.com/"
	$BOINCBAMUser="35605_25a601816e1971c60293a45f509a2fdb"
	$BOINCBAMPassword="foo"
	& "$ProgramsPath\BOINC\boinccmd.exe" --join_acct_mgr $BOINCBAMURL $BOINCBAMUser $BOINCBAMPassword

	$RegKeyPath = "HKCU:\Control Panel\Desktop"
	Set-ItemProperty -Path $RegKeyPath -Name "SCRNSAVE.EXE" -Value scrnsave.scr
}