[ubuntu] Grub fails to load kernel after boot-repair

I have an Ubuntu 14.04 running in a VirtualBox VM with Windows 10 Host. My problem started while installing the requirements for a package HIDAPI which required other packages such as Hidraw. I noticed the installation process was messing with GRUB and some point went to a black screen. After powering on the VM again, the boot menu was just memtest.

I tried to recover the Grub in several ways:
Manually (https://www.vijaytechnology.com/2011...ive-ubuntu-cd/)
Boot-repair (https://ubuntuforums.org/showthread....7#post10871917)

I run Boot-repair 3 times because the first one failed at purge of grub-install.
The second one, resulted into no boot menu and booting directly into grub console. Within Grub console I couldn't load the file initrd.img although it was there.
The third time, I got boot menu with the following options.
br_boot_menu.jpg

However, by either choosing Ubuntu or Advance->recovery mode, the booting process gets stuck as follows:

br_ubuntu_option.jpg

This is the report of Boot-Repair
http://paste.ubuntu.com/p/t2YxW5ySPD/

I would appreciate any help to recover my VM.

Attached Images

• br_boot_menu.jpg (59.6 KB)
• br_ubuntu_option.jpg (117.1 KB)