Like it says in the title, I've dual booted Ubuntu and Windows Boot Manager. It worked and then it stopped working and just goes back to GRUB. My setup boots GRUB and then I pick the system. The only way to go back to Windows is actually just go into the UEFI and manually pick Windows Boot Manager.
Here's the script I found for launching Windows Boot Manager. Please help.
insmod part_gpt
insmod fat
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 C617-20C7
else
search --no-floppy --fs-uuid --set=root C617-20C7
fi
chainloader /EFI/Microsoft/Boot/bootmgfw.efi