I have a Lenovo Yoga 260 with Windows 10 which I erased and replaced with Ubuntu 16.04 using a USB drive. After a successful installation, when I restart my computer however it will not boot. Does not take me to a grub menu either, takes me to boot / app menu Boot/app menu. All I can do is to reinsert my USB drive and if I cancel out of a reinstall, then it'll take me to the ubuntu desktop.
Can someone please help? I have tried going through all the boot repairs however that does not fix the problem.
This is the error message I see when the computer boots Error Message
Failed to open \EFI\BOOT\grubx64.efi - Not Found Failed to load image \EFI\BOOT\grubx64.efi: Not Found start_image() returned Not Found
Also when I go to my ThinkPad Setup page under Startup, Boot is set to UEFI only, I cannot change to legacy boot. Unselectable for Secure Boot
Please help, I'm not sure what else to do