I installed Ubuntu 16.04LTS on my Win10 laptop with Secure Boot disabled and it was able to complete installation without any problem. However, it refuses to boot using GRUB 2 and reverts to Win10 boot manager every time. I have tried boot-repair, transferring boot files to EFI/Linux to no avail. I am unable to reset UEFI trust boot despite disabling secure boot because this option is not there. I tried flashing the newest bios version (v.1.08 from v1.07 that is pre-installed in this machine) but it always flashes "firmware update failed".
I don't want to reinstall windows if there is any hope of installing ubuntu on this laptop. Any thoughts?