I can t connect to the Internet

This file is a help file for the network group component, when there is a network dial-up and other problems, the system prompts that the file is missing, which actually means that your system does not have this help file, and can not immediately display the solution and suggestions of the problem, that is, this file is a help document, not an important file of the system to be used on the Internet!

Here there is the next.

Copy the file to the C: Windows Help folder. (The help files in the system are stored in the help folder).

It's a help file, your system is not cloned, and the general compression system streamlines some files. You can't find it. It won't affect your access to the Internet.

Error 678 means that the line is not working, you see if your ADSL external line light (link or CD) is not on, if it is not on, it means that there is a problem with your external line, find ASP!

Is there a problem with the network card?

If the network card is fine, blame the client!

This one? You put that down.

The computer can't connect to the wifi to see if the wireless network card is disabled, the method is:

1. First, click the [Start icon] on the left side of the computer, and then click [Control Panel] in the pop-up drop-down menu, as shown in the figure below.

2. Then a [Control Panel] window will pop up on the computer desktop, click [Network and Internet], as shown in the figure below.

3. Next, click [Network and Sharing Center] on the right, as shown in the figure below.

4. Then click [Change Adapter] settings on the left, as shown in the figure below.

5. Finally, take a look at whether [Wi-Fi Connection] is disabled, if the icon of "Wi-Fi Connection" is colored, it means that it is enabled, or right-click [Wi-Fi Connection] to check whether it is enabled, as shown in the figure below; It means that it is launched.

Wireless router (TP-Link is used as an example for this security), only data is sent and there is no reason for data reception

1. The network cable connection error mainly means that the network cable connected to the modem should be correctly plugged into the router;

2. If you dial up the Internet and enter the wrong password;

3. Router problems;

4. Network problems.

Solution: 1. Connect the network cable correctly, and the network cable connected from the cat should be connected to the WAN port of the router (generally the only color port);

Router example diagram:

2. Log in to the router (the default address of the general router is, the username and password are admin, and the specific data can refer to the back of the router or the manual), find the [Network Parameters] option on the left side, select [WAN Port Settings], enter the correct Internet access and password, set the connection method (the default is to connect on demand, change the automatic disconnection time to 0), and click [Save];

3. Replace a router and re-dial the network;

I hope I can help you with your doubts.

See if there is a problem with the router, or the network cable, if there is nothing wrong with both, look at the router light, if there is one that is not lit, call the broadband company, it must be a problem in the computer room.

You can first check the network cable,It may be a problem on the operator's side,If it doesn't work,Reinstall the network card driver to see,If it doesn't work, it's not our side of the question.。