70 network faults (1)

1. Fault symptom: network adapter Nic) settings conflict with computer resources.

Analysis and Elimination: Adjust the IRQ and I/O values in the NIC resources to avoid conflicts with other computer resources. In some cases, you also need to set a patch cord for the motherboard to adjust conflicts with other resources.

2. Fault Phenomenon: other clients in the LAN of the Internet cafe can see each other on the "Network neighbors", and only one computer can see either of them or another computer. (Premise: the LAN of the Internet cafe is connected to a star network structure through the HUB or switch)

Analysis and troubleshooting: Check whether the computer system works normally; check the computer's network configuration; check whether the computer's network adapter works properly; check whether the NIC settings on this computer are in conflict with other resources; check whether the network cable is disconnected; check whether the network cable connector is in normal contact.

3. fault description: There are two network segments in the LAN of an internet cafe. All computers in one network segment cannot access the Internet. Premise: the LAN of the Internet cafe is connected to two CIDR blocks through two hubs or switches)

Analysis and Elimination: The two network segments are disconnected or the connection between the two ends is poor. Check the settings for this CIDR block on the server.

4. fault: All computers in the LAN of the Internet cafe can see each other on "Network neighbors. Premise: the LAN of the Internet cafe is connected to a star network structure through the HUB or switch)

Analysis and troubleshooting: Check whether the HUB or switch works properly.

5. fault: a client in the LAN of an internet cafe can see the server on the "Network Neighbor", but cannot access the Internet. Premise: the server refers to the computer that acts as the proxy for the Internet on the LAN of the Internet)

Analysis and Elimination: Check the TCP/IP protocol settings of this client, the IE browser settings in this client, and the settings related to this client on the server.

6. fault: All computers on the LAN of an internet cafe cannot access the Internet.

Analysis and Elimination: Check whether the server system works normally; whether the server is down; whether the modem works normally; and whether the local server works normally.

7. fault: no client can access the Internet except the server in the LAN of the Internet cafe.

Analysis and troubleshooting: Check whether the HUB or vswitch works normally. Check whether the network part of the server connected to the HUB or vswitch includes Nic, network cable, connector, and network configuration; check whether the proxy software on the server is running properly.

8. fault: During dial-up Internet access, MODEN has no dial-up sound, cannot connect to the Internet, and the indicator on MODEN does not flash.

Analysis and troubleshooting: whether the telephone line is busy; whether the connection to the MODEN Server includes: connecting lines and connectors) is normal; whether the telephone line is normal, with or without noise interference; whether the dial-up network configuration is correct; check whether the MODEN configuration is correct and whether the dialing audio or pulse mode is normal.

9. Fault symptom: the system cannot detect MODEN. If MODEN is normal ).

Analysis and troubleshooting: reinstall MODEN and pay attention to the correct location of the communication port.

10. fault: the connection speed to the Internet is too slow.

Analysis and Elimination: Check whether the connection speed of the port set by the server system in the "Dial-Up Network" is the maximum value; whether the line is normal; you can optimize the MODEN settings to improve the connection speed; modifying the Registry can also increase the speed of surfing the Internet, and check whether there are many clients accessing the Internet at the same time. If there are many clients, it is normal that the connection speed is too slow.

11. fault: the prompt box "error 678" or "error 650" appears on the computer screen.

Analysis and troubleshooting: Generally, the server line you call is busy and busy, and cannot be connected at the moment. You can continue to redial the server line after the next meeting.

12. fault: "error 680: no dialing sound is displayed on the computer screen. Check whether the modem is correctly connected to the telephone line ." Or "Thereisno dialtone. Makesure yourModem is connected to the phone line properly ." .

Analysis and troubleshooting: Check whether the modem works normally and is enabled; check whether the telephone line is normal, whether the modem is connected correctly, and whether the connector is loose.

13. fault: "The Modem is being used by another Dial-up Networding connection or another program" appears on The computer screen. Disconnect the other connection or close the program, and then try again "prompt box.

Analysis and Elimination: Check whether another program is using a modem; check whether the modem conflicts with the port.

14. fault: "The computer you are dialing into is not answering" appears on The computer screen. Try again later "prompt box.

Analysis and troubleshooting: the telephone system is faulty or the line is busy. Call again later.

15. fault: "Connection to xx. was terminated. Do you want to reconnect?" appears on the computer screen ?" .

Analysis and troubleshooting: If the telephone line is interrupted, the connection between the dial-up connection software and the ISP host is interrupted. Retry later.

16. fault: "The computer is not processing a response from the Modem. check that the Modem is plugged in, and if necessary, turn the Modem off, and then turn it back on "Prompt box.

Analysis and troubleshooting: Check whether the modem is powered on; check whether the cable connected to the modem is correctly connected.

17. fault: the prompt box "Modem is not responding" appears on the computer screen.

Analysis and troubleshooting: indicates that the modem does not respond; check whether the power supply of the modem is on; check whether the cable connected to the modem is correctly connected; the modem is damaged.

18. fault: a message indicating "no carrier" appears on the computer screen.

Analysis and Elimination: indicates no-carrier signal. Most of these errors are caused by abnormal shutdown of the modem application or telephone line; check whether the cable connected to the modem is correctly connected; and check whether the modem is powered on.

19. fault: a prompt box "No dialtone" appears on the computer screen.

Analysis and Elimination: indicates no dialing sound; check whether the telephone line is correctly connected to the modem.

20. fault: The computer screen prompts "Disconnected.

Analysis and troubleshooting: indicates that the connection is terminated. If the prompt is displayed during dial-up, check whether the modem power supply is enabled. If the prompt is displayed during use, check whether the phone number is in use.

21. fault: An ERROR prompt box appears on the computer screen.

Analysis and troubleshooting: indicates the error message, whether the modem works properly, whether the power supply is on, and whether the command being executed is correct.

22. Fault Phenomenon: "A network error occurred unable to connect to server (TCP Error: No router to host) The server may be down or unreadchable appears on The computer screen. Try connectin gagain later "prompt.

Analysis and troubleshooting: It indicates a network error, which may be a TCP protocol error. The connection fails because the route is not routed to the host or the server is shut down. In this case, only retry.

23. fault: The prompt "The line id busy, Try again later" or "BUSY" appears on The computer screen.

Analysis and Elimination: indicates the line is busy, and only retry.