The NI-VXI driver allows the user to power on and off the VXI chassis after powering on the host workstation, without having to power cycle, by enabling the VXI Variable Power On Function (VPO). The VPO function can be enabled through NI Measurement & Automation Explorer (MAX).
The VPO function is not supported on systems that have PCI Express Native Control enabled. In order to use the VPO feature, the user will need to disable the PCI Express Native Control on the system with the following procedure:
- Open the Windows Command Prompt with administrative privileges. This can be done by searching Windows for 'cmd', right-clicking on the Command Prompt application, and selecting 'Run as Administrator'.
- Enter the following command: "bcdedit /set pciexpress forcedisable".
- Reboot the system twice.