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Appendix D Troubleshooting and Common Questions
© National Instruments Corporation D-9 Serial Hardware and Software for Windows
Troubleshooting Diagnostic Messages
This section lists possible error messages returned by the diagnostic utility,
along with solutions.
No National Instruments Serial Port Found
If the
No National Instruments serial port found
error message
appears, complete the following steps:
1. Verify the hardware resources, as follows:
a. In the Device Manager tab, under Multi-function adapters,
double-click on a serial board.
b. If a serial board is missing from the Multi-function adapters list,
reinstall the hardware and software. For instructions on how to do
so, refer to the installation and verification chapter for your
hardware plaform.
c. ClickontheResources tab. If the resources were assigned
properly, the Resources tab shows which resources are assigned
to your serial ports.
d. Check the hardware resources. If they are in conflict, refer to the
previous section, Troubleshooting Diagnostic Messages.
2. In some versions of Windows Me/9x, in the Device Manager, the
Drivertab shows information about theinstalled driver.Make sure that
the National Instruments serial driver is installed for the port.
If the serial driver is a Microsoft driver, reinstall the NI-Serial
software. For instructions on how to do so, refer to the installation and
verification chapter for your hardware platform.
3. Make sure that the National Instruments serial driver is installed, as
follows:
a. Locate the
niserial.vxd
file in the
\Windows\system
directory.
b. If the
niserial.vxd
file is missing, reinstall the hardware and
software. For instructions on how to do so, refer to the installation
and verification chapter for your hardware platform.