Hello gegjr,
I'm John an Independent Advisor and a Microsoft user like you. I understand you want to display c:\Program Files (x86) in command prompt.
Press Start then search Command Prompt
Right click then run as administrator
Type: or you can copy and paste the command directly
cd C:\Program Files (x86)
Hit Enter
I hope this helps! Please let me know if you have any further concerns.
Sincerely
John DeV
Independent Advisor