NS_ERROR_FAILURE

[tramsss]

Hello, i had to reinstall my operating system and i installed VirtualBox on the fresh install of Linux Mint (Linux Mint 17.3 Rosa).
I restored my VMs backup and i tried to run one of my machine but i get the following error (italian message):

Apertura di una sessione per la Macchina Virtuale Windows 7 Professional non riuscita.

The virtual machine 'Windows 7 Professional' has terminated unexpectedly during startup with exit code 1 (0x1).

Codice 'uscita: NS_ERROR_FAILURE (0x80004005)
Componente: MachineWrap
Interfaccia: IMachine {f30138d4-e5ea-4b3a-8858-a059de4c93fd}

The VirtualBox version i installed now is 5.0.4, but i can't remember what version i had on Linux Mint before format it.
Do you know how can i fix it?

[Perryg]

Extension pack also installed?

Post the guests log file ( as an attachment )

[tramsss]

Extension pack also installed?

Yes, i also tried to install Extension Pack (v5.0.4), but it doesn't fix the problem.

Post the guests log file ( as an attachment )

Where can i find it?

I tried to create a new fresh VM and i get the same error! This means that the problem seems not to be the fact that my VMs has been created with another version of VirtualBox.
So, what could be the problem?

[Perryg]

Post the guests log file ( as an attachment ). Right click on the guest in the Main Manager then click show log. Save and post as an attachment. Compress if it is too large to post.

[tramsss]

Post the guests log file ( as an attachment ). Right click on the guest in the Main Manager then click show log. Save and post as an attachment. Compress if it is too large to post.

I have four log file: what of these do you need?

[Perryg]

The first one "vbox.log"

[tramsss]

I solved!

I had to install virtualbox-dkms package.