Grand Multi Guard - Windows Driver Install

After installing the Grand Multi Guard PCI card into your computer and restarting, XP should have detected the new hardware and prompted you for the drivers.

When this prompt appears, do not auto detect drivers, choose from another location.

  • Insert the Grandtec CD and browse to D:\English\BT878 (assuming D: is your CD drive)
  • Click on the BTPCIAV.INF file and continue.

This should install the drivers for the BT878 card.

Note: You may need to go to

  • Control Panel -> System -> Hardware (tab) -> Device Manager
  • Find the BT878 card (may have a green question mark)
  • Right Click -> Uninstall
  • Then Right Click on your computer name, (right at the top of the list) and choose ’scan for hardware changes’
  • This should invoke the driver wizard again.

Lets hope this is of some help.

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