A user reports that during the boot up process of a Windows 7 workstation, the message “MBR has been changed or modified” appears. What is the most probable cause of the message?
- A virus has damaged the MBR.
- A virus has damaged the boot sector.
- A boot sector virus has changed the MBR.
- A virus damaged the Windows system files.
Explanation: The change or modification of the MBR by a virus causes the system to display the message. A damaged MBR, damaged boot sector, and damaged Windows system files will cause different error messages to appear.