Take a remote computer out of safe mode (with networking) / put it back into normal mode.

Repair-RemoteSafeModeBoot.ps1

Function Repair-RemoteSafeModeBoot {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $true)]
        [string]$ComputerName
    )
    if (-not (Test-Connection -ComputerName $ComputerName -Quiet -Count 1 -ErrorAction 'Stop')) {
        throw "Could not ping $ComputerName; no attempt made to fix it"
    }
    $os = Get-WmiObject -ComputerName $ComputerName -Class 'Win32_OperatingSystem' -ErrorAction 'Stop'
    Write-Verbose "Computer $ComputerName last rebooted at $($os.ConvertToDateTime($os.LastBootUpTime))"
    $cs = Get-WmiObject -ComputerName $ComputerName -Class 'Win32_ComputerSystem' -ErrorAction 'Stop'
    Write-Verbose "Computer $ComputerName bootup state is $($cs.BootupState)"
    if ($cs.BootupState -eq 'Normal boot') {
        Write-Warning "$ComputerName is not in safe mode; no attempt to fix it was made"
        return # we don't want to proceed if the remote device is already in normal mode as we may do more harm than good (unlikely to have any impact tbh; but why risk it)
    }
    if ($cs.BootupState -ne 'Fail-safe with network boot') {
        Write-Warning "$ComputerName has boot up state $($cs.BooupState).  I've never tested with these states, so can't say what will happen.  Please read up on this & if acceptable to proceed amend this script to enable it for your scenario."
        return # probably safe to remove this & continue; but I don't want to be responsible for that decision... Comment this statement out at your own risk
    }

    # run a command on the remote computer to take it out of safe mode: https://superuser.com/a/706664/156700
    $rv = Invoke-WmiMethod –ComputerName $ComputerName -Class 'win32_process' -Name 'create' -ArgumentList 'bcdedit /deletevalue {default} safeboot' -ErrorAction 'Stop' | Select-Object -ExpandProperty ReturnValue
    if ($rv -ne 0) {
        throw "Attempted to run bcdedit, but received return value $rv implying that the command was unsuccessful"
    }
    Start-Sleep -Seconds 5 # probably not required; but added to be safe.  It's not like 5 seconds is much to ask if you're in this scenario.

    #restart the remote computer
    $rv = $os.Reboot() | Select-Object -ExpandProperty ReturnValue
    if ($rv -ne 0) {
        throw "Attempted to reboot the remote device, but received return value $rv, implying that the command was unsuccessful"
    }

    Write-Information "$ComputerName updated to normal mode & restarted.  Wait a few minutes whilst the reboot occurs then try to log in.  If you still have issues try rerunning this command with the -Verbose flag enabled to check whether the boot time or mode have changed."   
}