Many netizens are asking me that win7 network connection is limited. Here to give you a detailed explanation, because one by one plus QQ is still very troublesome.
The network cannot be connected normally under win7. We are now analyzing the reasons:
(In fact, the computer has problems for two reasons: software + hardware, general hardware is no problem, so we will not do in-depth discussion this time)
Now most of the Internet is used Routers, there may be a machine in the same LAN. This situation can not be solved by switching from router to direct connection broadband, but this eliminates the problem of network cable.
Your IP is set to be automatically obtained. In fact, it is to obtain IP and related parameters from the DHCP server. (It is said that the IP address is obtained from your router, but most of the routers are now the cottage version, and the performance is definitely flawed. , so have to look at the dhcp problem no)
first enter the network neighborhood & mdash; & mdash; check the network connection & mdash; & mdash; right click & mdash; & mdash; state ... look at send and receive one of them is not 0.. If so, then it may be necessary to see if it is a network cable.. A bit faulty
The local connection on the computer shows that the restricted or no connection is related to the network server and network card. Anyway, it belongs to the network problem, it has little to do with the computer
,
your network card's TCP/IP protocol, set the automatic acquisition of the IP address, [url=http://www.zhaoyuwen001.net/] wireless Network password cracking [/url] However, there is no
DHCP server in your LAN that allows your machine to get an IP address. So your IP address is not obtained, of course it is restricted or no connection.
Solutions:
Personal summary: xp can, why win7 you can? In fact, this is related to the system, it is known that win7 is a new system, so the problem occurs in hardware (network card and router) and software (win7 system) Above. To put it bluntly, it is caused by incompatibility, so generally our solution is to update the NIC driver, set up ip, DNS, router. (Only a personal point of view, if there is something wrong, please testify! Mo JJWW)
1. The problem with the firewall. Turning off the firewall will not have this kind of prompt! But it is not recommended to turn off the firewall (xp is recommended to close, win7 is not recommended)! It has no effect on your use
2. Network right-click properties → select left upper change adapter settings → local connection right-click properties → install → select protocol → add → select ReliableMulticastProtocol (reliable multicast protocol) protocol → OK, OK!
put local connection properties Inside the TCP /IP protocol properties dialog box opens, and then choose to manually configure the IP (manual ip you can see the ip of another computer), click OK. This includes the DNS settings.
3. Router problem, you need to enter the router to set your ip address segment and DHCP server to open. The encryption method of wireless routing, you set the shared key? Set to open system try not to see if the MTU in the route is 1500, manually set to <=1452, generally set 1452 can be solved.
The router firmware version is too low to be compatible with win7. Go to 192.168.0.1 and upgrade the router firmware version. Reset the router and reset it. The result is normal.
4. Run the command cmd——NETSHINTIPRESETIPCONFIG/FLUSHDNS (this is to clear the computer dns cache command)
5. Invincible appearance, the problem of the network card, generally does not appear, if it appears, update the network card driver, Still not you can go to repair
two other methods first: preparation:
1, drive home download driver wizard to download the latest certified version of the wireless network card driver.
2, uninstall the wireless network card, that is, the one except the wired network port, the rest are uninstalled and delete the driver (must be completely uninstalled, if the resolution is not clear, the cable network card driver is also downloaded, then all network devices are uninstalled And remove the driver).
3, after the uninstallation is successful, the hardware changes, there are 2 unrecognized hardware (win7 automatic installation failure prompt).
Reboot the computer.
4, after rebooting, install the driver of the wireless network card just installed.
5, install and restart the wireless router at the same time.
6, the installation is theoretically no problem. The compatibility of win7's automatic driver is still problematic. So replace it with the one that works best for your hardware.
Second: Children's shoes using win7 may have encountered restrictions on network access after linking to the wireless network, and can not access the Internet. In fact, this is the system setup problem of win7. How to solve it?
This is the Windows 7 system's "common problem", which can be solved through Group Policy settings.
1, first open the group policy window, then expand & ldquo; computer configuration & rarr; management template & rarr; system & rarr; Internet communication management & rarr; Internet communication settings & rdquo;;
2, then in the right window, find “ Turn off the activity test of the Windows network connection status indicator & rdquo;, double-click and modify the attribute to “ Enabled & rdquo;
After setting, you can access the network normally