After Indtalling DaVinchi Resolve Keyboard in notworking ( Cut, edit , Play , pause nothing can operational from keyboard)
Hi Arnabrt33, welcome to the community 
The right thing to do is check the 'ReadMe' file of the DaVinci software for compatibility requirements. If you are in compliance with the compatibility requirements, file a bug against the DaVinci Resolve install package here:
It might be that, after you filed the keyboard bug, the bug will be fixed in the next version of DaVinci Resolve or maybe sooner in an update.
DaVinci Resolve is closed source software so our possibilities to debug or fix things related to Davinci Resolve will be extremely limited.
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