Ubuntu 16 won't boot because a start job is running

[browser18]

Hello, I have tried to Install Ubuntu 16 alongside Windows 10 on a HP G6 laptop.

The installation completed and I was asked to restart the laptop.

When it restarted there was a black screen with text that ended with this message
"A start job is running for Ubuntu Live CD For Installer"

I followed the instructions from this guide
https://www.google.ie/amp/s/www.tecmint.com/install-ubuntu-16-04-alongside-with-windows-10-or-8-in-dual-boot/amp/

Step 13 in this guide says that a grub menu should appear on restart but that didn't happen.

Can anyone help. I have seen numerous posts on this topic throughout the web since ubuntu 16 release in 2016 but have yet to find an answer.

[tinylagarto]

Just asking. Did you remove the installation media before rebooting?

[browser18]

Just asking. Did you remove the installation media before rebooting?

I got a message saying the installation completed and the installation disc ejected. I waited for the grub menu to appear but windows booted instead.

In this thread https://ubuntuforums.org/showthread.php?t=2385361 the Poster Oldfred mentions that Hp interferes with the grub menu

[tinylagarto]

OK, I am not into UEFI and dual boot what seems to be the problem here.

What happens if you hit the shift key on boot?

[browser18]

OK, I am not into UEFI and dual boot what seems to be the problem here.

What happens if you hit the shift key on boot?

It boots to Windows