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TP-LINK TD-W8901G Wireless Modem Router Advanced Troubleshooting Guide
Released on 2009.09.25 Version 1.0

Content
Summary ...................................................................................................................................................................3 Troubleshooting Flow Chart and Resolutions..........................................................................................................3 Check 1 .................................................................................................................................................................3 Check 2 .................................................................................................................................................................4 Check 3.................................................................................................................................................................4 Note 1 ...................................................................................................................................................................5 Note 2...................................................................................................................................................................5 Resolution 1 ..........................................................................................................................................................6 Resolution 2..........................................................................................................................................................6 Resolution 3 ..........................................................................................................................................................6 Resolution 4 ..........................................................................................................................................................6 Resolution 5..........................................................................................................................................................7 Q1. How do I restore my modem router’s configuration to its factory default settings? ...................................9 Q2. What can I do if I don’t know or forgot my password?.................................................................................9 Q3. Why can’t I open some websites like www.msn.com or it opens very slowly? ............................................9 Q4. What can I do if I cannot access the web-based configuration page? ........................................................10 Q5. How to get the technical support from TP-LINK?........................................................................................15

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Summary
This document attempts to provide the basic procedures for troubleshooting TD-W8901G modem router problem.

Troubleshooting Flow Chart and Resolutions

Click the quick links for more details: Check1 Check2 Check3 Note1 Note2 Resolution4 Resolution5

Resolution1

Resolution2

Resolution3

Check 1
1. Make sure that the original power adapter iscorrectly connected from the modem to the wall socket and it is not damaged; 2. Make sure that the telephone line is correctly connected from the modem’s LINE port to the filter’s ADSL Modem port; 3. Make sure that the Ethernet cable is connected from PC to any LAN ports (1/2/3/4) of the ADSL modem router;
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Check 2
The indicator lights on the front panel of the modem router are used toverify the unit’s operation and status between your modem, PC and ISP’s network.

The table below describes what the lights mean.

Label

State
On (Steady Green) Off On (Solid Green) Flashing Green Off On (Solid Green)

Description
Power On No Power Synchronized Attempting Synchronization Not Synchronized The PPP (Internet) connection is successfully established There is no successful PPP...