Why can t the computer be connected to the Internet when it is turned on, but it is okay to turn off

Set an IP for the network card, if it's a single computer, just set one.

Check if there is a problem with the network. If the network is fine, then check the network settings, if it is a network setting problem, disconnect first, and then reconnect to the network.

To put it simply, a computer network is a "computer group" composed of two or more computers connected together, and a corresponding "communication facility" to form an integrated system. Computers can do many things, and although computers are getting faster, more and more powerful, and more and more capacities, there are still some fly in the ointment.

For example, the office is equipped with a state-of-the-art computer for everyone, but the availability of printers has become a problem. If only one or several computers are equipped with printers, those who do not have printers need to copy the files to the computer with a printer to print when printing, not only the resources shared on the network are not only printers, but also hard disks, discs, plotters, scanners, and all kinds of software, text and various information resources.

If the network cable is loose and the wifi is accessed, it will not be connected immediately after turning on. Look for a wifi signal. Make sure your WiFi router is on and has the correct signal set.

Cause: The problem occurs in the configuration of the cat or router, the computer settings, or the network cable is faulty.

Tools Required Ingredients:

There are no tools or raw materials, you need to find them carefully.

The steps to workaround are as follows:

Pay attention to check whether the power of the router and the cat is turned off, and whether it is connected correctly.

If you dial up the Internet through the computer, you need to dial up the Internet again after turning on the computer.

Check if there is any loose network cable between the computer and the modem or router.

Check whether the light on the cat is flashing or on normally, and if the external network light is off, contact broadband customer service for an external line check.

Note: Do not use brute force when plugging and unplugging the network cable, and plug in the network cable moderately.

Turn the cat off and turn it on again.

Is there any contact with the operator, if there is no problem, it is not a hardware problem.

Your power supply starts to break down, and you need to replace it immediately, so that your CPU will also break down.

Do you use two memories together? If so, unplug one and try it.

The problem with the power supply of the case, you have to take it and fix it!

Or maybe the memory card in your machine is too dirty. You first disassemble the outer box panel.

Take out the memory card strip and wipe it with a clean rag and try it a few times.

Go back and be sure to be in place.

Tightened. It's fine when it's turned on.