I recently had this problem on a GV-650 Geovision system.
The symptoms were:
On startup, Multicam startup software would run.
A splash screen shows that says "Multicam system startup..."
After about 30 seconds, a dialog would appear that says "Can't find keypro!"
then another dialog "Card setup fail"
then finally a dialog with a timeout of 15 seconds which says "Device driver is lost, or it has not been installed. Try to restart windows"
Clicking cancel on this dialog allows the computer to keep running, but if the time was allowed to run down to zero, the computer would restart. (ANNOYING!)
Under the device manager, there was reference to any GV-650 hardware present.
Solution:
The video capture PCI card in the computer had lost it's seating on the motherboard. Reseating the card fixed the problem.
After restarting, the Multicam software started as per usual and the device manager showed the relevant hardware.
