Hello
Thank you for your question and reaching out. I can understand you are having query\issues related to C: drive missing.
- Disable any Antivirus program or Windows firewall you may have for temporary purpose.
- From command prompt and run a few bootrec commands.(Press enter after each set of commands)
Bootrec /fixMBR
bootrec /fixBoot
bootrec /rebuildBCD
- Go to > Disk Management, > "More Actions >" select "rescan disks". Then reboot your PC
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