management-scripts/Restart-EndpointOnUptime.ps1

# Function to restart an endpoint that has not been restarted for the specified number of hours
Function Restart-EndpointOnUptime ([int]$MaxUptimeHours) {

    # Exit if the specified number of hours is not greater than 0
    If ( !($MaxUptimeHours -gt 0) ) { Write-Output "Must specify 1 or more hours" ; Exit }

    # Get the last boot up time as a DateTime
    $LastBootTime = [Management.ManagementDateTimeConverter]::ToDateTime($(Get-WmiObject -Class Win32_OperatingSystem -ErrorAction Stop | Select-Object -ExpandProperty LastBootUpTime))

    # Get the total number of hours the endpoint has been up
    $UptimeHours = $($(Get-Date) - $LastBootTime).TotalHours

    # If $Uptime is greater than $MaxUptimeHours, restart the endpoint
    If ( $UptimeHours -gt $MaxUptimeHours) {
        Write-Output "This endpoint has been up for at least ${UptimeHours} hours and will be restarted now"
        Start-Sleep -Seconds 5
        Restart-Computer -Force
    } Else {
        Write-Output "This endpoint has already been restarted within the last ${MaxUptimeHours} hours"
    }
}