1 The system prompts that the connection to the server timed out: network problem.
The system prompts that the password is wrong: your number has been stolen, or check whether the case of the keyboard is wrong, or whether there is a problem with the keys (a keyboard with problems can easily miss a key, or even the key is useless).
There is no response after logging in at 3 o'clock: there is something wrong with the QQ system file. It is recommended to reinstall or check the virus.
The system prompt version is too low. Download the latest version.
If you are not a computer that has logged into qq before, you can surf the Internet by proxy. It is estimated that your home network is either a host or an agent. Please ask your network administrator for the specific proxy address gateway.
If you can't access other web pages, please try to exit the antivirus software firewall. It is also possible that there is something wrong with the firewall settings.
Ps: Exclusion method can be adopted to solve this problem. You give the number to others and let them try it. If you can log in, it's your machine itself. If you still can't log in, it's your QQ number itself.
2. What if the computer QQ suddenly fails to work?
Let me give you a try:
1. After installing QQ, look for QQ.exe in the folder. Don't start it by shortcut. If it still won't open, don't uninstall it. Reinstall according to the last installation path.
2. After the method 1 doesn't work, your QQ is installed on the D drive. You find the D drive in My Computer, right-click the D drive icon, select "Check for errors" in the Tools tab of the Properties and repair it, and then reinstall the QQ software! (Prevent track damage from affecting software operation! )
3. After it doesn't work, it means that there is nothing wrong with the software itself and the computer hard disk. QQ can't be started normally because of virus or registry damage. I suggest you reinstall the system!
3. What if I can't surf the Internet but can use qq?
Reason 1: The winsock communication component of the system has failed.
This is why 80% of computers can access QQ but can't surf the Internet.
Generally, it is caused by incomplete antivirus, invalid pirated windows installation and system patch, and abnormal system recovery.
Method: If it is win2k and winxp, click Start-Run, enter "sfc /scannow" and confirm.
If it is win98/me, enter "sfc" and the system will automatically check the replaced system components and restore them.
You will be asked to insert the system installation disk.
You can also download a software: "winsock fix".
Reason 2: IE browser is damaged.
When this problem occurs, you can use Firebox, Opera or TT. Only IE can't browse. At most, the browser itself is broken and IE needs to be reinstalled.
Reason 3: The proxy settings are incorrect.
View and modify the settings of proxy server in "Connection" settings under "inter Options".
Reason 4: Domain name resolution error:
When a computer performs domain name resolution, it must first access the Hosts file on this computer, and the virus will modify this folder to block some websites, especially
It is an anti-virus website visit, and the Hosts file is in the "c:\windosw\system32\Divers\ect" directory by default.
Open it with notepad. Generally, anything below127.0.0.1localhost can be deleted.
If there is nothing wrong with the hosts table itself, there may be something wrong with the DNS settings. Generally, ADSL and dial-up Internet can be set to automatically obtain DNS.
Reason 5: Virus problem.
There are not many cases where the real virus leads to inaccessible, but some virus Trojans will enter the IE process.
4. How to solve it
One reason: your firewall blocks your QQ.
Solution: Of course, it is the process of starting QQ in the firewall, because different firewalls have different opening methods, so you can ask the experts around you. Of course, there is the easiest way-turn off the firewall.
If you use the firewall that comes with win XP sp2, you can turn it off like this: Find the broadband connection status-Properties-Advanced-Settings-Exceptions, and then "Programs and Services" will appear. Check the QQ programs and QQ game programs you know and confirm them. The second reason: the network is busy, catching up with the peak period.
For example, you can log in to one QQ, but the other one can't log in at all. It must be the network. Solution: There is no good way. Please log in later.
Ha.
The third reason: the login port of QQ is blocked.
Solution: This problem is the most complicated one. There may be a problem with the TCP/IP protocol settings of your network card, or the UDP protocol is not enabled in the network. If you use a school (or company) machine to surf the Internet, the teacher (boss) will generally block the UDP port to prevent you from chatting during school (work).
In this case, you can only ask your teacher and boss to open it.
Or apply for registration as a QQ member and log in to QQ through a proxy server, but that will cost money.
There are many reasons, so I won't mention them one by one. I now list several methods. When you can't log in to QQ, you may wish to try one by one, which may have unexpected results. 1。
Go to the installation directory of QQ and delete the folder named after your number. 2。
Turn off the firewall, and the system itself will turn off 3. It is impossible to completely delete QQ software, download the latest version and install it again: smash the QQ folder with 360 and clean up the registry. If you think my answer is useful, please like it.
5. What should I do if my home computer can't open the webpage and I can't access QQ?
Comprehensive solution to the problem that Windows system can't access the Internet. The network of Windows operating system has always had such and such problems. I saw a lot of people asking these questions on the Internet, so I used some examples to tell you what to do when the Windows system encountered the problem of being unable to access the Internet. Software problem 1, Vista can't access the Internet. The solution to this problem is simple. If your taskbar has a broadband connection icon (not well drawn), you can have a control panel at the beginning (those above the power off button). When you enter there, you can enter it with an icon (icon style: four computers are connected by a line, and the Chinese version is "network center"). There are six options on his left. Select the sixth option (manage network connection) and press enter, and you will find a picture with two computers. Right-click the first icon, select the attribute button at the bottom, find the words with TCP/IPv4 in the pop-up box, click him, and then click the button below him (the last of the three buttons), which is the attribute. You can adjust your IP address here, and it will be OK after adjustment.
2.Windows 2003 cannot access the Internet (1). Open the registry editor and delete the following two items in the registry (it is best to export the backup before deleting): HKEY _ local _ machine \ system \ currentcontrolset \ services \ Winsock HKEY _ local _ machine \ system \ Current control set \ services \ Winsock 22), find the tcpip.inf file in the inf directory of the system directory, and open it to find: [MS_TCPIP. primary install]； TCPIP has properties to display: characteristics = 0xA0ncf _ has _ uincf _ not _ user _ removable Change 0xa0 here to 0x80, save and exit (this setting is for users to modify TCP/IP protocol) 3), open "local connection"-install-add protocol-find the newly saved tcpip from the properties installed on the disk. Selecting the last "Inter Protocol (TCP/IP)" (there is no icon on the left, but it is not that "Microsoft TCP/IP version 6") will prompt that there is no digital signature. Just press OK to install. After completing this step, I return to the network connection window. At this point, after selecting TCP/IP, the Uninstall button is already available (it was grayed out before this step).
Click the uninstall button to delete the TCP/IP protocol, and then restart the machine. 4) After the restart, change the tcpip.inf file back, and then reinstall the TCP/IP protocol according to step 3 (no digital signature will be prompted at this time, hehe).
5) After installing the protocol, restart it once and reset the connection properties of "Local Connection" to connect to the network. If not, restart it again, hehe. I deeply thought that the problem was that the aging of my hard disk caused the data related to TCP/IP protocol to be damaged, so I quickly ChkDsk my hard disk, hehe.
3. WindowsXP can't surf the Internet. I found that one of the most common mistakes in Windows XP is that I can't surf the Internet. Many people have encountered this problem and don't know how to deal with it. Some people even have to reinstall the system. In fact, it is not very difficult to solve this problem. First, check that there is no icon in the network connection indicating that there is something wrong with the network card. And the device manager can discover the existence of the network card.
The initial judgment is that the network card is in poor contact. First check whether the contact between the crystal head of the network cable and the network card is firm.
Second, check whether the network card is plugged in tightly, and it is best to plug it in again. Mainly look at the following two aspects: 1) Some people have problems in establishing connections, and this problem is easy to solve. Just open the connection tab in the IE-INTER option, click Settings, and re-enter the password to confirm.
2) If the above methods can't be solved, under the condition of ensuring that there is a network card driver (at present, many network cards don't need to install drivers, and WindowsXP will automatically install drivers), just enter the Control Panel-System-Hardware tab, click Device Manager, uninstall the network card (don't uninstall the 1394 network card), and then press OK to restart the system. In this way, if WindowsXP recognizes your network card, some network cards of Inter are loaded with drivers, the system will scan for a long time, and then a connection icon with a yellow exclamation mark will appear in the lower right corner. This requires you to set your own IP address. The method is: double-click the icon, click Properties in the displayed dialog box, click TCP/IP in the pop-up general tab, click Properties, and choose to use the following IP address. Fill in192.168.1.x (x is 2- 10) in the IP address, then click the subnet mask, and the system will automatically generate 225.225.225.0. Finally, click OK to close this tab, and click OK to close the General tab, and your network will return to normal.
4. Unable to access the Internet after reinstalling the system. You are starting to open MS-Dos. Enter "ping192.168.1"and press enter to check whether there is a connection (that is, "reply from192.438+068.1:bytes = 30). If you use dial-up software, you can't Ping. If you can't get online, it may be due to software. Just reinstall the dialing software.
5. Unable to access the Internet after installing dual systems. Windows Vista and Windows XP dual systems may have the problem of being unable to access the Internet. This problem has nothing to do with dual systems in general, and it should appear in TCP protocol. First, enter the command line mode, enter CMD, and enter "ping 127.0.0. 1" at the command line prompt to judge whether the TCP/IP protocol has been successfully installed. If it fails, reinstall the TCP/IP protocol, and if the general rules enter the next step.
Enter "ipconfig" to get the local IP address and gateway address, and judge whether there is a problem with the network card by "ping the local IP address", if not.