How to Troubleshoot a LAN Adapter

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How to Troubleshoot a LAN Adapter

If your network adapter can not connect with network, please check the following:

1. Make sure your adapter is defective, or not

We can run Diagnostic program which bundled in our shipping driver diskette to check the adapter's hardware. Please follow below instructions to run the Diagnostic program.
a. Make sure that the adapter is completely plugged in PC's slot.
b. Remove any add-on adapters from slot, except for VGA adapter.
c. Disable PnP OS support in BIOS.
d. Boot from DOS-only environment.
e. Before run Diagnostic program, please don't run any drivers.
f. If the adapter tests fail, try to use another slot.   

2. Check the LED status.
If you have installed driver and re-boot PC completely, please check the network adapter and connected device's LED. The LED of adapter and connected device should show the same link-speed.

a. If the LED does not flash, please check your cable.
We can take a sample test. Plug the UTP cable into Up-link and normal port of
hub. If both LEDs of connected port are flash, the UTP cable should be fine.
Use Crossover or Straight-Through cable

b. If the LED shows incorrectly. we can try to force line-speed of adapter.
The default parameter of our adapters is "auto-sensing". For some of Auto-Negotiation incompatible issues, we must force the line-speed of adapter. Please refer the readme file to set the line- speed.

3. Check cabling system
Fast Ethernet cabling system and rule

4. Make sure your configuration of Network Operating System is correct.
Please refer to the read me file to install driver. Below hints to check the configuration of your Network Operating System.

a. Microsoft Windows 98/Me/2000 and NT.
Because the default protocol of Windows 98/Me/2000 and NT is TCP/IP, so we must assign IP address for each PC. If you don't know how to assign IP address for each PC or don't connect to Internet, we can install NetBEUI protocol.