
If Windows loads normally, you have nothing to worry about unless the error starts happening frequently.

Occasionally this error occurs randomly and there is nothing wrong with your PC. Troubleshooting BOOTMGRīefore you try anything else, restart your computer and let Windows attempt to boot once more. Is my computer dying? Is my hard drive failing? Is my data safe? There are a number of reasons this error could occur - everything from a loose hard drive cable, to a bad OS upgrade, or even the occasional fluke. Even advanced users have many questions when this error turns up. When it is missing, Windows is unable to boot.

The BOOTMGR is a program that runs when you start your PC, and loads your operating system from the hard drive. Turning on your PC, only to be greeted with the words BOOTMGR is missing, is a panic-inducing experience.
