Operation Manual

Error Messages
Controller C4 – 8 Troubleshooting 39
8.2 Error Messages
Error Messages in Windows 2000
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
Once the computer has been updated, the ISDN-Controller
hardware and software are re-installed and configured as de-
scribed below.
All other instances of errors and problems
Please refer to the Microsoft Windows 2000 documentation.
Error Messages in Windows NT
Error Message on loading the ISDN-Controller with
“C4 Load”: “Installation Error. Interrupt <xx> not available”
Possible cause: There are no IRQs (interrupts) available to
the PCI bus.
Remedy: Run your BIOS setup (see the PC or mainboard
manual) and allocate at least one free IRQ for use by PCI ad-
apters.
Example (Award BIOS): In the BIOS main menu, select
“PnP/PCI Configuration”, then set “IRQ x assigned to:
PCI/ISA PnP”.
If you combine adapters without Plug-and-Play support in a
system equipped with PCI or ISA Plug-and-Play cards, 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.