Ubuntu 16.04.2 in Virtual Box does not start

I wanted to install an Ubuntu Server in my Virtual Box, the installation works fine but after I reboot to start the VBox I get a black Screen. I already have tried reinstalling it but nothing works.

I installed Vbox on Windows 7 64bit PC. The VBox for Ubuntu has 3GB RAM and 10 GB VHD.

My startup on Ubuntu picture:

Solution 1:

I had the same issue on Windows 10 host when I installed Docker it automatically enabled Hyper-V and the Ubuntu Guest Os beahved exactly like you describe, nothing helped but disabling Hyper-V in Windows 10 host settings - Win+R ->OptionalFeatures.exe -> uncheck Hyper-V

Solution 2:

Did you install ubuntu as 64 bit or 32 bit?

In the case that you installed it as 64 bit do this:

• Open Virtual Box

  Select your virtual machine and click in "Configurations"

  Go to "General"

  Change the version to "Ubuntu (64-bit)"