Rebuild the boot sector. When you are unable to start the computer and see a disk read error, the boot configuration data store (BCD) could be corrupt, missing, or incorrectly configured.

Why does my computer say Disk read error? A “Disk read error” on your computer signals a problem with the hard drive, preventing the system from accessing essential startup information.

Dealing with the "Your PC did not start correctly" error on a Windows 10 or 11 computer can be quite troublesome.

If your drive has a bad sector, it can corrupt your files and cause the error message “Can’t read from source file or disk” to exist.