Hyper-V_Pre_Script.ps1

$Cleanup=Test-Path -Path "C:\HypervisorRestartLogs\*.txt"
if ($Cleanup -eq 'True') {
    Remove-Item -Path C:\HypervisorRestartLogs\*.txt
}

# Creating Log files
New-Item C:\HypervisorRestartLogs -ItemType Directory -ErrorAction SilentlyContinue
New-Item C:\HypervisorRestartLogs\Logfiles.txt -ItemType File -ErrorAction SilentlyContinue
Get-Date | Out-File -FilePath C:\HypervisorRestartLogs\Logfiles.txt -Append

# Checking Presence of Hyper-V
Get-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V | Out-File -FilePath C:\HypervisorRestartLogs\Logfiles.txt -Append
#BCDEdit / enum
#Bcdedit / set hypervisorlaunchtype auto

# Logging Virtual Machines State
$MachinesState = Get-VM
$MachinesState | Out-File -FilePath C:\HypervisorRestartLogs\Logfiles.txt -Append


$RunningMachines= Get-VM | where-Object {$_.state -eq 'Running' -or $_.State -eq 'Starting'}
$RunningMachineNames=$RunningMachines.Name
$RunningMachineNames | Out-File -FilePath C:\HypervisorRestartLogs\Logfiles.txt -Append
$RunningMachineNames | Out-File -FilePath C:\HypervisorRestartLogs\RunningMachines.txt -Append
# Creating Snapshot of Running VM's Before savingtheir State.
#$RunningMachineNames | Checkpoint-VM -SnapshotName (Get-Date)
#$RunningMachineNames | Stop-VM -Save -Force
$RunningMachineNames | Stop-VM -Force

Get-Date | Out-File -FilePath C:\HypervisorRestartLogs\Logfiles.txt -Append
Get-VM |  Out-File -FilePath C:\HypervisorRestartLogs\Logfiles.txt -Append

Start-Sleep -Seconds 60
Restart-Computer -Force