Operation Manual

Error Messages
54 ISDN-Controller C2 – 10 Troubleshooting
Using dual-boot systems:
To use the AVM ISDN-Controller C2 in a dual-boot system, in-
stall the drivers for each of the relevant operating systems in
a separate directory, such as IDRIVER.WNT.
Upgrade from Windows NT 4.0 to Windows 2000
Before you switch your computer over from Windows NT 4.0
to Windows 2000, both the hardware and the software of the
ISDN-Controller must be removed. Once the computer has
been updated, the ISDN-Controller hardware and software
have to be re-installed and configured as described.
10.2 Error Messages
Error Messages in Windows NT 4.0
Error Message on loading the ISDN-Controller with “C2
Load: Installation Error. Interrupt <xx> not available.”
Possible cause: There are no IRQs available to the PCI bus.
Remedy: Run your BIOS setup and release at least one free
IRQ for use by PCI adapters. Please see your PC or mainboard
manual.
Example (Award BIOS): in the BIOS main menu, select
“PM/PCI Configuration”, then set “IRQ x assigned to: PCI/ISA
PnP”.
If you combine adapters without Plug-and-Play support (Leg-
acy) and PCI or ISA Plug-and-Play cards in one system, then
the resources (I/O addresses and IRQ levels) used by the
hardware without Plug-and-Play support should be so desig-
nated in the computer’s BIOS. Otherwise, system resources
may be allocated to more than one adapter, resulting in mal-
functions. Please see your PC or mainboard manual.
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