Open an Elevated Command Prompt
This simple tutorial will show you how to open an
elevated command prompt to run commands that require administrator permissions.
1) Click Start
2) Type cmd but
do not press enter

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Click to enlarge)
3) Right click the
cmd.exe entry at the top of the last and choose "Run as Administrator"
4) If necessary, enter the admin username and password in the UAC screen that pops up and press "Continue" or "Yes"
5) You will now see a command prompt window. That's it! :)
Hope this helps!
Regards,
Stephen