Hi, I need help with my computer. My computer says it does not know any of the instructions it was given in the command prompt, what should I do?

[Motheo Morena]

Hi Tregarth, I'm David, and I'm happy to help you. I suggest you use the system file checker to repair possible corrupted or missing system files. 1. Open Start and type cmd, right-click on "Command Prompt", and select "Run as administrator". 2. Run the following commands at the Command Prompt one at a time: dism.exe /online /cleanup-image /scanhealth dism.exe /online /cleanup-image /restorehealth dism.exe /online /cleanup-image /startcomponentcleanup sfc /scannowHi when I do as instructed in step number 2, my computer says:Error: 87The online/cleanup-image/scanhealth option is unknownError:

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