[vbox-dev] [VBox-users] VirtualBox (vboxdrv) installation FAILED on new Windows 7 PC

[Alexey Eromenko]

One thing is special about this Windows 7 PC: It uses UEFI.
All the other dozens of my Windows 7 PCs, where VirtualBox works like
a charm, all use BIOS.
Maybe some kind of security properties do differ somehow.
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Event Viewer:
System/Information
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A service was installed in the system.

Service Name:  VBox Support Driver
Service File Name:  C:\Program Files\Oracle\VirtualBox\VBoxDrv.sys
Service Type:  kernel mode driver
Service Start Type:  demand start
Service Account:
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System/Error

The VBox Support Driver service failed to start due to the following error:
The system cannot find the file specified.
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In reality the driver file exists:
C:\Windows\System32\drivers\vboxdrv.sys
and
C:\Program Files\Oracle\VirtualBox\drivers\vboxdrv.sys

yet, it is completely absent from Windows Device Manager (driver list).
So the driver was copied, but not installed.