Movie Maker is not working – but I can’t uninstall Essentials, read on please

After installing Essentials, my Movie Maker program won't work. I reinstalled Essentials but nothing.  I don't want to uninstall & reinstall because the entire reason I installed it was to backup my Outlook.com account emails to my hard drive using Windows Live Mail & it DID work.  It took 3 hours though. When I uninstalled Essentials before, it wiped all that out.  And in a few days, Microsoft will no longer sync & I can't get a hard copy of these emails, so I'm afraid to do that.  I have tried everything. Someone please help me. I need to do a project today.  I don't know what else to do.  I can't uninstall the old Movie Maker.