Why is it that one of the computers in our office drops as soon as the computer is turned on?

Go to the lubricator and manually set the IP of the computer armor and control its bandwidth.

Is it an ARP attack? It feels like a Trojan horse.

There may be a network address conflict.

Check it out. The same goes for whether it's near a route. If this is also the case in a place close to the wireless, it is recommended that you change the route. Enterprise-grade wireless is best for general office use.

1. IP conflict, 2. There is a problem with the computer system.

1.Lines are a problem.

Give him a new thread to see if it will drop; You can also see if the router or switch is plugged in, or you can try a different routing port.

2.Operating system, virus issues.

It is recommended to check and kill viruses first; Reinstall the system if you are able; If the machine uses dual network cards, uninstall one network card; It is recommended that users who are not very familiar with computers do not install various firewall software at will, as incorrect settings will cause instability on the Internet.

3.Firewall, IE browser settings are incorrect.

If the Internet access is unstable, you can try to turn off the firewall first, test whether it is stable or not, and set it accordingly. In addition, if the firewall is caused or the Internet Explorer fails, it can also cause the connection to be normal, but the web page cannot be opened.

4.NIC issues.

You can try a different network card.

I agree with the statement of the first floor, I also encountered a similar situation in the Gongji Fan Division. Restarting a route can solve the immediate problem temporarily, but restarting the route is not the solution.

To solve the problem, we have to start from the root: (elimination, to solve the problem, it is not too troublesome) 1Hardware problems can sometimes be on, sometimes can't - > network cable conductivity is no problem (no need to measure), check the crystal head, whether sometimes the contact is poor (the probability of hair front is small).

Since you have changed the port on your router, it is not affected by broadcast storms or loops.

Now connect the network cable to the device - > PC and router. If so, you can replug the base of the network card, or check whether the network card is in poor contact to determine whether there are other problems (the incidence is small). Router -- > other computers can get on (sometimes can) surface router settings are problematic, router age?

How many PCs can it support? Is the performance sufficient for the existing network? --Solution: Try to replace the router (it is possible!)

2.System and software problems: whether there is a problem with the system (someone in the office uses the same version but there is no such problem) - this directly skips the software compatibility problem, uninstalls the software that is not usually used, and eliminates the computer software of colleagues who use the same version of the system (this should be very fast, you have what he doesn't have, uninstall it) 3

Network providers and Internet bandwidth network providers sometimes set port usage - > ask the network business to not have enough Internet bandwidth, or the performance of the machine is not good - > resulting in insufficient occupation and bandwidth, and cannot access the Internet. I solved it before -- the router of the > company is aging and the performance is poor, so I directly replace the router. (FYI).

What you said is vague and difficult to judge. You can restart the router and see if it works. If not, you can use the elimination method to judge for yourself:

1.Use a computer to connect the router, unplug all other network cables, and try each port to determine whether the routing port is broken. 2.

Increase the number of computers one by one, and of course, the IP is set to be acquired automatically. Bump and burn.

If it really doesn't work, go check the computer, pay the slippery error.

The most fundamental way is to go to the router to swap the network cable socket with someone else's.

Character issues, really, I'm pretty sure.

Your computer is far away from the route... The reception signal is weak...

There may be several points in the landlord's problem.

Conflict, you are an office sharing a network, whether the LAN IP is set, not set or two machines set the same IP, two machines with the same IP address will conflict with each other, resulting in the disconnection of one of the machines.

2.Network card or network cable, check the following lines, whether the network cable is damaged, whether the crystal head part is too dusty, and the network card is damaged, it is possible.

3.As the cliché goes, your machine is poisoned or attacked.

Do all three of your computers dial up separately? If so, it depends on how many broadband Internet accounts your office has opened, if there is only one, it may be restricted by the telecom company? If there are two or three, there should be no problem?

If there is always a problem, call the telecom company for repair** and ask them to send someone to take a look.

Are you being attacked by someone else?

The solution to frequent broadband drops is as follows:

1. If you use a router, disconnect the router for stand-alone dial-up test;

2. If you have a modem device, please pay attention to whether the device is overheated, and it is recommended to turn it off for a few minutes before restarting it.

3. If the connection is dropped when running the program alone (such as when playing a game), it is recommended to restart the computer or reinstall the program;

4. Check whether there is a disconnection caused by a computer virus, and it is recommended to scan the whole disk;

5. If there is a server to choose from the running program, please select China Unicom.

I have encountered this situation before, but later I found out that the connection was dropped because of the router, and it is recommended to replace the router, so it will be no problem.

Here's how to do it and speculate:

1. Connect the laptop directly with a network cable, and connect wirelessly as usual. See if there is any fault with the same.

If so, A: Go to Device Manager in the operating system, disable the wireless network card, and set the network card to fixed IP, subnet mask, gateway, and DNS. Test with a network cable. Normal method 2. If it's not normal, it's a router or broadband issue.

2. Prepare the broadband account and password (you need to confirm with the broadband provider whether it is dialed by the optical modem or the router), restore the router to factory settings, and reset the broadband connection information WiFi name and WiFi connection password.

The second step is actually to rule out the suspicion of the netter. Too lazy to do some way to check the IP to verify. Directly restore the factory to change the name and password, and the other party can't get it so quickly if he wants to rub it again.

Reset the network.

1. Press win+r on the desktop to enter cmd and click OK to open the command prompt window, win10 right-click the start menu with the mouse to open the command prompt (administrator).

2. Enter in the command prompt: netsh winsock reset (you can copy and paste with the right mouse button) Later, there will be a successful prompt, successfully reset the winsock directory, restart the computer to complete the reset.

PS: The win key is a key with a Microsoft icon next to the Ctrl key.