Question 2: What happened to the network? There are too many protocols bound to the network card, which is very common among LAN users. If the network card is bound with many protocols, when the data passes through the network card, the computer will spend a lot of time to decide which protocol to use to transmit the data, and then the user will feel very slow. The solution is to use one network card to connect ADSL only by binding PPPoE protocol to provide external connection to the Internet, and use another network card to bind other protocols of the LAN, so as to perform their respective duties and improve the performance, so that the internet access speed of the client will be improved. 2.ADSL equipment has poor heat dissipation. ADSL equipment generates a lot of heat when working, so attention should be paid to heat dissipation at ordinary times. Many users put ADSL equipment, routers and hubs in a cabinet, which is not conducive to heat dissipation and has an impact on the normal work of ADSL. ADSL and other equipment should not be put in the cupboard, but should be placed separately. There are ventilation and heat dissipation channels between devices. It is best to maintain a constant temperature indoors, and the general ambient temperature should be controlled at 10 ~ 30℃. 3. Error in accessing Internet interface This is caused by an error in accessing the Internet interface specified for IE by the Internet Connection Wizard of Windows system. EnterNet 300 (virtual dialing software) uses LAN type virtual dialing, and IE uses ordinary dialing by default. When browsing, IE first looks for the dial-up interface. If it can't find a dial-up, it will look for whether there is a proxy server in the LAN, and finally it will find the interface of EnterNet 300, so it will be very slow. Just run the Internet Connection Wizard again, select LAN mode, and cancel the automatic search for proxy servers. 4. Unable to bind TCP/IP protocol. Unable to bind TCP/IP. Most of them are incorrect installation of network card drivers, quality problems of network cards and poor PCI slots. The network card driver in the device manager should be deleted first, and then installed after restarting; If it is not good, replace the network card with PCI slot; It is still difficult to change the network card. The quality of telephone line is very poor. ADSL technology requires high quality telephone lines. At present, ADSL is a kind of RADSL (Rate Adaptive DSL). If the telephone line between the telecommunication bureau and users is disturbed by external factors within a certain period of time, RADSL will dynamically adjust the access speed of users according to the line quality and transmission distance. If you visit a foreign site, the speed will be affected by the export bandwidth, the line and equipment configuration of the other site, and it needs the cooperation of the whole network. The main problems existing in the line are the quality hidden dangers left by the failure to follow the construction standards, such as rats biting off the line without adding plastic sleeves; Poor jumper contact due to quality problems of distribution frame or other materials; When decorating, the indoor lines hidden by users are damaged. 6. The software has not been reset. After the user installed ADSL, the internet access conditions changed, and the corresponding tool software was not reset, which is also one of the reasons for the slow speed. For example, the communication software QQ, you need to make some settings for it. Select the system parameter command in the QQ panel, click the network settings tab, and change the original dial-up Internet access to the Internet through the local area network. 7. Microcomputer hardware and software problems Hardware failures are mainly manifested as bad network cards or incorrect installation; Microcomputer motherboard and network card are incompatible; Low computer configuration, especially low memory, leads to slow running speed. Software failure is mainly due to the user's ignorance of computer knowledge and misoperation in the use process, resulting in errors in the operating system or damage to dialing software, which makes it impossible to access the Internet. After the user browsed some web pages, there was a problem in the system, and the backup dialing software was accidentally deleted during the processing; After the microcomputer reinstalled the system, no dialing software was installed, and so on. These soft tripod failures can be eliminated by reinstalling the dialing software. 8. A website can't be opened for a long time. The reason is that many users visit the same hot website during peak hours. Because the server of this website can't handle it, or the bandwidth is narrow, the network speed will be very slow and the webpage won't open for a long time. Please avoid surfing the Internet or visiting other websites during peak hours. 9. Due to the failure of Internet nodes, the network system automatically detours, resulting in slower network speed. Please wait patiently for the system to recover. 10. Due to the cat's own quality problems, the Internet access speed is slow. Please change the quality cat. 1 1. The electric index of the telephone line is too low, which leads to slow Internet access. Please ... >>
Question 3: What is a network connection error and how to solve it? 1. Check whether the network is clear.
Click Start-Run-Enter cmd. Then enter the ping space and URL, and press enter to see if the network of this website is unblocked. Is it a network problem? If not, it may be other problems such as the browser.
2. Network connection problems such as multiple networks.
Network connection error caused by multiple networks. 3.DNS optimization
Open antivirus software-manual service-enter DNS- click DNS optimization to solve the problem that web pages can't be opened.
4. Browser cache problem
Open the browser and click Tools-Clear traces of surfing the Internet. Some websites can't be opened due to browser cache problems.
Question 4: Why does the computer always prompt that the network is abnormal? Cause: It may be caused by network instability!
Solution:
(1) Download qq Doctor and patch it!
(2) There is a network abnormality in general wired connection, which is probably an IP address. It is recommended to use 360 antivirus.
Question 5: What should I do if the QQ display network is abnormal? Forced stop in the settings, and then restart.
Question 6: What should I do if the computer network is abnormal? Open the computer outpatient system in the 360 security guard system repair, and all the problems will be solved at once. You can try! You can also optimize and repair lsp in functional networks.
Question 7: What happened to the network? It is inevitable that your computer (or auxiliary equipment) is in a sub-health state from the beginning. It turns out that it is no accident that you are sick. There are many reasons for this phenomenon (of course, user configuration is very important). Your question should be searched "comprehensively and thoroughly", with special emphasis on the word "comprehensively and thoroughly". Any reason is the root of this phenomenon, and the problem is the result of your passivity. Proactively reduce problems as soon as possible. I am here just like Chinese medicine: treat both the symptoms and the root causes for you; You might as well check it carefully, comprehensively and thoroughly according to the following aspects; This is = unblocking the road of various devices, and the road is smooth = your problem is solved (completely out of sub-health state). Copyright statement: this answer is harmonious and original, and no one can steal it! 1: check the power supply (after the transformation of the two national networks, the voltage of 99.98 in remote mountainous areas is qualified, and there is no low voltage; The low voltage is caused by the thin wire diameter of the user, so the incoming wire can be replaced. ) 1. 1 Check whether the power supply is stable with a multimeter? 1.2 Is the AC voltage fluctuation within the allowable range? Is the ripple coefficient after 1.3A/D power conversion (checked by millivolt meter) qualified? 1.4 Is the temperature rise of the power supply abnormal? Does the voltage stabilizing characteristic of 1.5 meet the technical index? 1.6 Do the voltage stabilizing characteristics and ripple coefficient meet the technical indicators under rated load? 1.7 When replacing the large fan, does your power supply capacity meet the requirements? 1.8 power supply for general auxiliary equipment (routers, network switches, cats, etc.). ) is a rectifier power supply, with no voltage stabilizing function, large ripple coefficient (possibly due to dry filter capacitor) and poor load capacity; Special attention should be paid. 1.9 Due to overvoltage of equipment (like feeding children, it is more likely to die), low voltage (like feeding children, lack of which will lead to malnutrition), excessive voltage fluctuation (like feeding children, hungry), overcurrent and fever, the overheating protection action will be cut off, and the equipment will not run (that is, it will be slow, delayed and not run)/kloc-0. Are you agile? Refuse to move or misoperation? 2. Check whether the network cable and the crystal head (R45): 2. 1 Are the crystal head and socket plugged in (loose)? 2.2 contact? What is the contact resistance? 2.3 Is there dust? Is it oxidized? 2.4 Are the mechanical locks of the crystal head and seat locked? 2.5 Is the locking firm? 2.6 Are the cable and the crystal head pressed tightly and in good contact? 2.7 The insulation resistance between network cables (using 100V shaking table) should be greater than 20 megohms. Copyright statement: this answer is harmonious and original, and no one can steal it! 3. Lightning protection and grounding: grounding is mainly to ensure the safety of people and equipment! Lightning will burn the network card; In severe cases, it can cause fire and casualties! Multi-point grounding, repeated grounding and nearby grounding are the principles; Grounding is divided into protective grounding, shielding grounding and working grounding. Static electricity is the chief culprit of blue screen of death! I tested with a noise meter, and the noise voltage without grounding is more than 6000 times larger than the signal. Can your equipment work under such high noise if it is not grounded? Grounding is the most basic requirement, especially for analog devices and digital circuits. Grounding can reduce or eliminate interference from all sides, external interference and inter-line coupling between local and local wiring. Do a good job in grounding shielding of equipment. A lot of interference comes from poor shielding and grounding. Many people only do software, and many interferences are caused by poor grounding or no grounding. This kind of fault is very easy to happen and is easily overlooked by many people. Many equipment damages are directly related to grounding. Ungrounding or poor grounding will lead to intersymbol interference, error code, delay, packet loss, interruption, disconnection (disconnection, interruption), crash, jamming, automatic shutdown, repeated startup, repeated restart (or repeated connection) and other phenomena. Grounding must have more than two grounding electrodes, and the interval between each grounding electrode should be at least10m. There should be no joint between the grounding electrode and the grounding wire of the computer room. Soft copper wire with a cross section of not less than 25mm2 should be introduced into the bus bar of the computer room (no joint is allowed in the middle) and then connected ... >>
Question 8: Why does the mobile phone always display network abnormality? There are several reasons why mobile phones always prompt network anomalies:
1, probably because the network signal where the mobile phone is located is not good, you can go online in another place.
2. The mobile phone network setting is incorrect, so you can use another access point to surf the Internet. Compared with CMNET, you can use CMWAP access point to surf the Internet.
3. Broadband may be in arrears, so it is impossible to access the Internet.
4. The 4.WiFi name contains Chinese, which makes some mobile phones unable to access the Internet.
5. There is a problem with the mobile phone system. It may be that there is a problem with the system, which leads to the connection to WiFi but the inability to access the Internet.
Suggested solution:
1, use other mobile phones or devices to connect to WiFi, try to surf the Internet, and eliminate the problems of WiFi itself.
2. Try to restart the router, or restore the factory settings of the router, and then dial-up the Internet again, reset WiFi according to the setup wizard, or replace it with a new router and dial-up the Internet again.
3. Contact the broadband customer service, confirm whether the broadband account is in arrears or not, recharge the broadband, and then try to dial up.
4. If the WiFi name contains Chinese, it is recommended to change it to English or a combination of English and numbers before connecting.
If all the above reasons are excluded, it is likely that there is a long-term problem with the mobile phone system. It is suggested to restore the factory settings or brush the machine to see if it can solve the problem.
Question 9: What if the wireless network is abnormal? The most direct way is to reset.
Wireless connection:
1. To create a wireless network link, go to the Win7 start menu in the lower left corner of the desktop and click "Control Panel".
2. Click "Network and Internet"
3. Next, open the "Network and * * * Enjoy Center", which is a function that Win7 computer networking must use. Whether connecting to a wireless network or a broadband network, you need to turn on this function to set it. There are also shortcut keys, which can be opened by clicking the shortcut key like a window in the lower right corner of the desktop.
4. Click Set up a new connection or network.
5. Select "Connect to the Internet"
6.win7 will automatically search for the corresponding wireless network, click "Connect" on the network with the best signal and enter the password. If no password is set for this wifi. You can connect directly to the Internet.
"Wireless connection" refers to the global voice and data network that allows users to establish long-distance wireless connections, and also includes infrared technology and radio frequency technology optimized for short-distance wireless connections.
Question 10: What should I do if my mobile phone often has network anomalies? Thank you. The first method: I suggest you do a physical examination with 360 mobile phone security guard or Tencent housekeeper first, delete the software that is not commonly used, give the mobile phone a good running environment, and clear the cache in the mobile phone.
The second method: enter the settings of the mobile phone, click Settings to enter, check whether there are any factory settings in the settings of the mobile phone, and click Restore, provided that the information in the mobile phone is saved in the memory card, otherwise the mobile phone information will be lost.
I hope I can help you, and I hope LZ will adopt it! ! !