- Check the Issue: Check to make sure that the operating system is actually missing and hasn’t just shut down unexpectedly. Confirm by restarting the computer and checking if the operating system appears.
- Start the Diagnostic Process: If the computer does not start up with the operating system, run a diagnostic check on the hardware to check for possible issues.
- Re-install the Operating System: If the hardware check comes up with no issues, the operating system will likely need to be re-installed.
- Ensure Data Backup: Ensure that all necessary data is backed up and transferred to an external device before proceeding.
- Prepare Re-Installation Discs: Prepare re-installation discs or USB keys with the appropriate operating system on them.
- Re-install the Operating System: Once the discs or USB keys are prepared, re-install the operating system.
- Restart the Computer: After re-installing the operating system, restart the computer to check that it is functioning properly.
