The main hard drive (the one C:\ is on) is showing as raw

It sounds like your main hard drive has become corrupted, possibly due to a hardware failure or software issue. Here are some steps you can take to try and recover your drive:

Check the drive's health: Use a diagnostic tool like CrystalDiskInfo to check the health of your hard drive. If the tool reports any errors, you may need to replace the drive.

Recover your data: Use a data recovery tool like EaseUS Data Recovery Wizard which is the best https://www.easeus.com/how-to/best-data-recovery-software.html to recover your data from the raw drive. Make sure to save the recovered data to a separate drive to avoid overwriting any existing data.

Repair the file system: Use the command prompt to run a chkdsk /r command to repair the file system on the drive. This may take some time to complete.

Reformat the drive: If the above steps don't work, you may need to reformat the drive and reinstall Windows. This will erase all data on the drive, so make sure to back up any important data first.

Restore from backup: If you have a recent backup of your system, you can restore it to the newly formatted drive to get a functioning OS with all of your applications.

Note: It's always a good idea to consult a professional if you're unsure about any of these steps or if you have valuable data on your drive that you can't afford to lose.