[UbuntuGnome] Booting with Ubuntu stuck at Black Screen after HP Laptop BIOS Upgrade

I have dual boot setup of Windows 8.1 & UbuntuGnome 15.10 on my HP ENVY Laptop (15-u110dx)

I upgraded the BIOS to the latest firmware from Windows 8.1.

After successful BIOS upgrade, I am able to boot into Windows,
but on selecting the "Ubuntu" option from the Grub menu I am presented with only a blank screen.

Please help me to resolve this boot issue.

Regards,
Ajitesh