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The wireless routers mentioned in this article are mainly for home use. Nowadays, wireless routers for home use are very common, not only in the family, enterprises and institutions is more frequent. Coupled with the introduction of portable mini wireless routers, wireless routers can be found everywhere. Use of wireless router terminals are more than laptops and smart phones. Here are the problems I encountered.
First, the laptop can not access the Internet
Cell phones can be connected to the Internet, laptop computers through wireless and wired can be connected, but just can not access the Internet.
The above situation, there may be the following low-level errors: First, forget to plug the router to connect the external network cable; Second, the external network cable inserted incorrectly, inserted into the interface to connect to the intranet; Third, there is a physical failure of the router; Fourth, connected to other wireless signals. A higher level of error, incorrect configuration. Like the user name or password is incorrect, the router's MAC is bound, the IP address is restricted, or the local DHCP service is not turned on.
I encountered the situation that everything is configured correctly, just do not forward data. This situation gives me a headache for a few days, I can not check any error, but also asked a friend to help check it all over again, there is no error. From another point of view, they do not have any error, it can only be the manufacturer's problem, the router system is not stable, or understood as "dead" (although not dead, the configuration page can be opened normally). At this point, the treatment is to restore factory settings and reconfigure the data.
There is also a case of congenital defects. Router with two or three days after the network, not forwarding packets, restore the factory settings can not. At this time, I have two ways to deal with it, one is to put the router for two hours, cool down the temperature and then use it, the problem is solved. The second is to upgrade the operating system of the router to the latest version (some will also have the risk of unsuccessful upgrade). After the upgrade is successful, the problem can usually be solved. Encountering this situation, it is best to find the seller to replace the goods, because this time the problem can be solved, does not mean that the problem will not occur in the future, after all, this situation belongs to the product quality problem.
Second, the cell phone can access the Internet computer can not access the Internet
The first thing that can be determined in this case is that the router settings are basically correct, because the phone can access the Internet. For insurance purposes, I checked the router configuration again, check the firewall to see if there is no restriction on the MAC address is filtered. So it seems that the problem can only be in the laptop.
First thought of the laptop system has a problem, after all, the computer has been used for a long time, the operating system hundreds of thousands of files inevitably which a file out of the problem, but where is the problem? Narrow down the scope, through the ipconfig command to view, found that there is no gateway, only to obtain the IP address, of course, at this time can not access the Internet. Why can not get the gateway address? The router, the computer restarted once, with antivirus software scanning once, still can not.
And then narrow the scope: router configuration is not a problem, the problem in the notebook system, the system can not get the gateway, that is, the network card can not get the gateway. This situation has two possibilities, one is the normal operation of other programs affecting the network card, the second is the network card itself has a problem. The first possible situation is not very good to check, from the second to start checking, the simplest of course is to reinstall the network card driver, this that is fast and time-saving, because the ghost version of the system, comes with more drivers, so uninstalled can soon be automatically installed. After the operation was completed, the problem was solved.
However, after two days, the same problem occurred again, the solution is the same as last time, but did not succeed. Then uninstalled the hardware, scanning again to get the network card installed, or not. Could it be that other programs are affecting it? Think back to the recent installation of new programs, QQ updated the main program, 360 Security Guard upgrade, nothing else is installed. After some thinking, decided to download the latest NIC driver. After the latest version of the network card driver installation, or so, can be connected, but the external network can not get out, can not get the gateway. Ideas changed I do not know how many, I did not expect the later solution is even more simple - CMOS discharge. Turn off the laptop battery, wait a while, hold down the laptop power for about half a minute to complete a discharge.
Summary of experience
1, in this case the use of troubleshooting method is to gradually narrow down the possible scope of the failure. This method is often used in troubleshooting, it is the key link and the difficulty is to be able to catch the problem a think down.
2, according to the author's experience, the general notebook wireless card can not get the gateway and the card's driver has more to do with this case is the CMOS operating system instability caused by the more rare. In fact, CMOS is a read-write RAM chip on the motherboard, is used to save the BIOS hardware configuration and user settings for certain parameters. It is also an operating system, which saves some parameter settings of the card, and if this operating system has problems, it seems that it will also have an impact on the normal use of the card.
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发表于 2014-10-16 16:42:24
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