How do I fix a disk read error on my laptop?

Restore your laptop to the previous system state.

This can be done through System Restore in the Windows Control Panel.
Check and remove any viruses on the laptop.

Invest into a reputable antivirus program to scan for and remove malicious software.
Check the hard drive for errors.

Disk Check or Error Checking can be used in the Windows Control Panel.
Run a System Diagnostic tool.

This can check for other errors and hardware malfunctions.
Perform a clean boot.

This can help identify potential conflicts with other programs that could be causing the error.