Get system up time script and alternative ways

Save as a ps1 script, and run.

$computer = "computername"

$lastboottime = (Get-WmiObject -Class Win32_OperatingSystem -computername $computer).LastBootUpTime

$sysuptime = (Get-Date) – [System.Management.ManagementDateTimeconverter]::ToDateTime($lastboottime) 
  
Write-Host "$computer has been up for: " $sysuptime.days "days" $sysuptime.hours "hours" $sysuptime.minutes "minutes" $sysuptime.seconds "seconds" 

Outputs like:

PS D:\_DATA\Scripts> .\Uptime.ps1

computername has been up for:  71 days 4 hours 26 minutes 50 seconds

Alternatives:

1. Go to "Start" -> "Run".

2.  Write "CMD" and press on "Enter" key.

3. Write the command systeminfo | find "up time" and press on "Enter" key.

1. Go to "Start" -> "Run".

2.  Write "CMD" and press on "Enter" key.

3.  Write the command "net statistics server" and press on "Enter" key.

4.  The line that start with "Statistics since …" provides the time that the server was up from.

•   The command "net stats srv" can be use instead.

Uptime.exe Tool Allows You to Estimate Server Availability with Windows NT 4.0 SP4 or Higher

Source

Alternate source