Changing or viewing remote computer’s description, name and other options related to Win32_WmiObject and class Win32_OperatingSystem is relatively easy with powershell. Just type in new script in PoweShell ISE or in notepad and save it as .ps1 file.

You can as well display current description and other options by typing:

Full list of available options is here:

https://msdn.microsoft.com/en-us/library/windows/desktop/aa394239(v=vs.85).aspx

Solution based on:

https://social.technet.microsoft.com/Forums/en-US/a777f07c-f9be-4eb5-8788-de7e5c068411/changing-computer-descriptions-remotely-using-powershell?forum=winserverpowershell&prof=required