I have Windows 10 installed in my laptop, and today I created a partition and installed Ubuntu 18.04 Desktop LTS.
Everything went well until the end of the setup process. Then I got a message telling me to reboot the computer and after rebooting, grub does not appear and even in the Windows bootloader I don't see Ubuntu as a choice. Windows are loading but I cannot access Ubuntu.
I've tried to use the following solution: Grub menu not showing at boot after upgrading to Windows 10 in dual boot and when I reboot the problem is still not solved.