Rebooting a computer can fix software conflicts that cause Bootmgr. If you're dual-booting or multi-booting, this is not just what you want, it's what you NEED.The Bootmgr error could be a fluke.

It's got mouse/touch support, gobs of slick themes, a script to turn regular system fonts into the kind it needs (yes, I used it to convert the ubiquitous Klingon font, thank God I know my systems well enough to never need to actually read what it displays on-screen grin), defaults as granular as booting into certain operating systems based on time of day or day of the week, basically everything but the kitchen sink. So many completely automated functions that need explicit configuration in other boot managers, it almost always 'just works.' You can strip out drivers for filesystems you won't ever need as easy as deleting a file, or just as easily add new ones by copying one file to the right directory (I'm in love with one that allows you to take a screenshot with the PrintScreen key at any point before the system loads, it rocks for asking for help on forums/StackExchange with boot failures). Compared to GRUB and everything else that came before, it feels like that moment in so many movies when light shines down from above on someone and a chorus rings out singing some Ionian mode triad in rich and flawless harmony.you know, when the Divine favor is bestowed. Mello's Experience I've used rEFInd on all on my systems for many years and even contributed a few bits of code and documentation along the way.

Boot manager windows 7 repair