Solutions to the inability of some computers to connect to the Internet after a switch

Connected to the switch after the Internet cafes have some computers can not access the Internet? What's going on? How to solve this problem.

After the switch, the Internet Café computer can not be online, cause this situation may be: physical connection instability, improper computer settings, etc., please follow the following steps to exclude:

1, replace the computer and switch between the network cable, to ensure that the switch corresponding indicator light, local connection stability. Check method: Two computers under the switch, set in the same network segment, if you can ping, between the computer and the switch connection stability.

2, the computer local connection set to automatically obtain IP (prerequisite front-end router to open the DHCP server), right-click the local connection properties, select Internet Protocol (TCP/IP), click the Properties button.

3, select "Automatically obtain IP address", and then determine.

4, when the computer normal access to IP, you can normally access the Internet.

5, if the normal access is still not online, please check the front-end router related settings, whether the computer to prevent the Internet.

6, if not normal access to IP address, replace the switch and router between the network cable.