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5.1 Troubleshooting
1. System fails to find the PCI serial & parallel board or COM / LPT port.
A:
It may cause by following issue:
a. The board is not properly plugged into the PCI slot.
b. Please clean the golden finger.
c. The PCI slot is defective. Please try other slots until you find one that
works.
d. The mainboard does not have an available IRQ for the PCI serial board.
Enter the PC.s BIOS and make sure an IRQ setting is available in the
PCI/PnP settings.
e. The board itself might be defective. You can try another mainboard
testing this board working or not.
2. There is a blue screen when I entry operation system.
A:
The possible reason is an IRQ or I/O address conflict with other PCI bus
adapters, such as LAN or serial boards, or with the system BIOS. Refer to
the corresponding problem in the previous FAQ for solutions.
3. There are some exclamation marks in device manager and serial ports
can not work properly.
A:
It caused by the wrong driver installing or hardware settings. Please turn off
your computer firtly and re-install hardware and software, especially
re-install the correct driver. If problem still happens, please change another
PCI Bus slot to install this board.
4.
How can I set the LPT port to the legacy 278 or 378 ISA address?
A:
Because of PCI plug-n-play rule and windows operation system limitation,
you can NOT remap to 278H or 378H legacy ISA IO address under
Microsoft Windows or Linux OS.
