When you are trying to start your computer, you will receive the error message like "Operating System not Found"or "Missing Operating System". And you are prevented from using any of your PC's features.
"Operating System not Found" may occur for a wide range of reasons like below:
Verify the computer's BIOS settings to make sure the BIOS lists and recognizes the hard drive. After you confirm that the BIOS is able to detect the hard disk, restart the computer to determine whether the issue is resolved. If you have fixed operating system not found error, or the BIOS can't detect the hard disk, you may have issues with your hardware.
Fix Genius enables you to fix missing operating system error and other system errors by booting up your computer to a virtual system. Here is a simple guide of how to fix this issue with Fix Genius. Please note that the method 1 is a must. Before using this software, confirm your hard drive works properly.
The Recovery Console is recommended to deal system not found error with only if you are an advanced user who can use basic commands. Moreover, Recovery Console is not available in Windows 7 or Windows Vista. Only when Recovery Console has been preinstalled on your system, or there is an original Windows installation CD, it can be accessed from the boot menu. Therefore, it is not an idea solution since it has so many limitations. If you insist on this solution, go on for the details.
Note that the fixmbr command may damage your partition table (part of MBR) if a hardware problem exists. You may also create inaccessible partitions by this command. You are highly recommended to backup your data before you use this fixmbr command.