Unable to run commands in command prompt in Windows 2012 R2

I installed SQL on a Windows 2012 R2 and patched with latest Windows updates.
However I am unable to run any command from Command prompt e.g.IPconfig, ping  etc.
Not too sure how to fix it.
cgeorgeisaacAsked:
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Shaun VermaakTechnical SpecialistCommented:
Type this and post results
SET PATH

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Can you run this?
c:\Windows\System32\ipconfig.exe

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I suspect your PATH variable is incorrect
JohnBusiness Consultant (Owner)Commented:
In addition to the above suggestion, run DISM.

Right click on cmd.exe and select Run as Administrator. Let us hope that works.  Then:

dism.exe /online /cleanup-image /restorehealth   You would want to restart the server after this.

If that cannot run, run msconfig.exe from the Start button. This is a GUI, not command. Select Safe Mode under Boot and restart in Safe Mode. Then run the above commands.
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
I put all my money on a scrambled/deleted PATH, as mentioned by Shaun.
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cgeorgeisaacAuthor Commented:
Please see attached:SQL-cancel.JPG
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
PATH is missing all the default paths - which are usually appended automatically. Go into the System applet (e.g. by pressing Windows-Break), Advanced System Setup (or similar), then environment variables, look for PATH in the lower pane, edit, and add
;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;

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at the end or beginning of it. After committing the change, you should be able to use tools again in a new command prompt.

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cgeorgeisaacAuthor Commented:
Brilliant Qlemo - That Fixed it!  Bravo.
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Windows Server 2012

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