Update Single Registry Value through Powershell

 $server = Get-Content C:\Users\sunil\Desktop\Book1.xlsx

foreach($ser in $server){

Set-ItemProperty –Path HKLM:\System\CurrentControlSet\Control\Lsa –Name RestrictRemoteSAM -Value 'O:BAG:BAD:(A;;RC;;;LA)'

#Get-ItemProperty –Path HKLM:\System\CurrentControlSet\Control\Lsa –Name RestrictRemoteSAM

}