Have you tried it on another computer? Get the same RAW file system problem?
If you do get the same RAW file system problems, firstly restore all your wanted drive data back with data recovery software, like Recuva, EaseUS Data Recovery and iCare Data Recovery Free, etc. And then, try to format it on this computer.
Also cannot be formatted there? Just run the error-checking tool to see whether it is still healthy.
If you do not get the same RAW file system error, just back up all your stored drive data and find ways to fix your computer problems.