[CmdletBinding()]
Param (
    [int]$Age = 6,
    [string]$To = "[email protected]",
    [string]$From = "[email protected]",
    [string]$SMTPServer = "HostnameOfSMTPrelay"
)
#Set variables
$Then = ((Get-Date).AddDays(-$Age)).Date
$Results = @()
$Header = @"
    <style>
    TABLE {border-width: 1px;border-style: solid;border-color: black;border-collapse: collapse;}
    TH {border-width: 1px;padding: 3px;border-style: solid;border-color: black;background-color: #6495ED;}  
    TD {border-width: 1px;padding: 3px;border-style: solid;border-color: black;}
    </style>
"@
#Attempt to load ActiveDirectory module, must have RSAT installed
Try { Import-Module ActiveDirectory -ErrorAction Stop }
Catch { Write-Host "Unable to load Active Directory module, is RSAT installed?" -ForegroundColor Red; Exit }
#Loop through domain computers
ForEach ($Computer in (Get-ADComputer -Filter { OperatingSystem -notlike "*server*" } -Properties OperatingSystem ))
{   Write-Verbose "Attempting to connect to $($Computer.Name)..."
    Try {
        $Lastboot = Get-WmiObject -ComputerName $Computer.Name -Query "SELECT LastBootUpTime FROM Win32_OperatingSystem" -ErrorAction Stop
    }
    Catch {
        Write-Verbose "Unable to connect to $($Computer.Name)..."
        $Results += New-Object PSObject -Property @{
            ComputerName = $Computer.Name
            User = "Unknown"
            LastBoot = "Unknown"
            Status = "Unable to connect"
        }
        Continue
    }
    Write-Verbose "Connected to $($Computer.Name)..."
    $LastBootTime = $Lastboot.ConvertToDateTime($LastBoot.LastBootUpTime)
    If ($LastBootTime -lt $Then)
    {   Write-Verbose "Hasn't rebooted in over $Age days, rebooting $($Computer.name)..."
        $Status = "Rebooted"
        Restart-Computer -ComputerName $Computer.Name -WhatIf
    }
    Else
    {   Write-Verbose "$($Computer.Name) last rebooted on $LastBootTime..."
        $Status = ""
    }
    $Results += New-Object PSObject -Property @{
        ComputerName = $Computer.Name
        User = (Get-WmiObject Win32_ComputerSystem -ComputerName $Computer.Name).Username
        LastBoot = $LastBootTime
        Status = $Status
    }
}
#Build the report
$Body = $Results | Select ComputerName,User,LastBoot,Status | Sort Status,ComputerName | ConvertTo-Html -Head $Header -PreContent "<h2>Reboot report</h2><br>Reboot date: $Then" -PostContent "<br><h3>Run on $(Get-Date)</h3>" | Out-String
#Email the results
Send-MailMessage -To $To -From $From -Subject "Reboot report" -Body $Body -BodyAsHtml -SmtpServer $SMTPServer
Write-Verbose "Script completed, report emailed to $To"

-Pn: Treat all hosts as online -- skip host discovery

sudo apt-get install wireless-bcm43142-dkms

gconftool --recursive-unset /apps/panel
rm -rf ~/.gconf/apps/panel
pkill gnome-panel