You have a computer that runs Windows 7.

You have a system image backup of the computer.

You install a new application that is configured to run as a service.

You restart the computer and receive a STOP error message.

You need to successfully start Windows 7 in the minimum amount of time.

What should you do?

A.
Start the computer from the Windows 7 installation media and select Startup Repair.

B.
Start the computer and select Last Known Good Configuration from the advanced startup options.

C.
Start the computer and select Safe Mode from the advanced startup options. Restore a restore point.

D.
Start the computer and select Safe Mode from the advanced startup options. Restore the system image.

Explanation:
Last Known Good Configuration (Advanced) ) feature in Advanced Boot Options is a recovery option that you use to start your computer with the most recent settings that worked. Last Known Good Configuration (Advanced) restores registry information and driver settings that were in effect the last time the computer started successfully. You should use the Last Known Good Configuration (Advanced) feature when you cannot start Windows 7 after you make a change to your computer, or when you suspect that a change that you just made is causing a problemfor example, if you cannot start Windows after you install a new video driver. When you start your computer by using the Last Known Good Configuration (Advanced) feature, Windows 7 uses the configuration stored in the following registry key:

When you perform a system restore following a normal boot or following a boot that uses the Last Known Good Configuration (Advanced) option, a restore point is created that enables you to undo the changes if they do not fix your problem. However, if you perform a system restore when the computer is in Safe Mode or by using the System Recovery options, you cannot undo the restore operation. In this case, if your problem is not resolved, you can run another system restore and choose a different restore point.