You could try making a task using Task Scheduler. Be warned: This may not work, as your employer may have disabled the Task Scheduler on their computers.
First, create a batch file with this code:
%windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
Next, open Task Scheduler by pressing Win+R and typing out
On the right side of the window, click "Create Task"
Under the first tab that appears, make a name for your task (could be anything, doesn't matter)
Click on the "Triggers" tab and add a trigger. Set it to begin the task on a cycle, and choose "one time" from the radio buttons on the left.
Under advanced settings, tick the "Repeat task every:" box, and in the dropdown list, choose "5 minutes". Make sure the "Enable" box is ticked also. Make sure you save the changes!
Under the Actions tab, add a new action. Make sure the dropdown is set to "Start a program," and in the Program/Script box, browse to the batch file you made earlier. Again, make sure that you save your changes.
Now, click OK in the initial window. Your task should be created and running. This will make a command prompt window appear every 5 minutes, but it will open and almost instantly close.