For use on blogpost https://normansolutions.co.uk/blog/encourage-those-windows-to-restart

ForceMachineRestart.ps1

Import-Module ActiveDirectory
$ou = "OU=Office Computers,Dc=CompanyName,Dc=Net"

Get-ADComputer -Filter * -SearchBase $ou  |
    ForEach-Object {
    Restart-Computer -ComputerName $_.name -force
}

# If you wish to eliminate specific machines from this restart - no problem, you can add a "where" clause using a wildcard to either target an individual or complete OU.

Get-ADComputer -Filter * -SearchBase $ou | where { ($_.DistinguishedName -notlike "*OU=Display,*" -and $_.DistinguishedName -notlike "*BURSAR*") } |
    ForEach-Object {
    Restart-Computer -ComputerName $_.name -force
}