The network is sometimes good and sometimes bad, is it related to the virus?

1. The LAN may be an ARP virus, this virus is very lethal to the LAN!

Solution: Install ARP firewall.

2. There are a total of 7 computers, why not make it simpler? Now 8-hole switches are cheap!

Solution: modem + router + switch + computer terminal.

Solution: Use anti-P2P tools, such as P2P Terminator, etc.

Internet broadcasting, or ARP viruses, ** things, or BT will affect the speed of the network. You can bind everyone's IP and MAC address in the router, and then see which IP is the most active when the network card is the problem of which computer. Moreover, the two-way IP binding can be spoofed by ARP.

The router can also be set to prevent network broadcasting.

There may be some computers installed with a lot of Thunderbolt QQ TV or something. Turn them on as soon as you turn on your computer. And one of them, such as Thunderbolt poisoning, it will continue to ** something that can't be seen. You go and see if any of the seven computers are open.

Another way is to install them all on the eset antivirus software in 360 Firewall and 360 Antivirus. If it doesn't work, the method of exclusion.

Internet access on one computer at a time. If you find that the computer is slow, reinstall its system.

Not easy to judge. Please tell us more about yourself.

The main hazards of computer viruses.

1. Destroy memory.

There are four main ways to destroy the memory of your computer: occupying a lot of your computer's memory, prohibiting the allocation of memory, modifying the memory capacity, and consuming memory. Viruses occupy a lot of memory and consume a lot of memory resources when running, resulting in a lack of system resources, which in turn leads to crashes.

2. Destroy files.

Viruses can damage files in the following ways: renaming, deleting, replacing content, reversing or copying content, losing part of the program**, writing to Xiaozhao time gap, splitting or counterfeiting files, losing file clusters, and losing data files. Files that have been damaged by viruses will not be usable if they are not disinfected in time.

3. Affect the running speed of the computer.

Once the virus is set on fire in the computer, it will run non-stop, occupying a lot of system resources of the computer, making the system resources of the computer and slowing down the operation of the computer significantly.

4. Affect the normal operation of the operating system.

Computer viruses can also disrupt the normal operation of the operating system, including automatic restart of the computer, crash for no reason, failure to execute commands, interference with the execution of internal commands, failure to open files, false alarms, occupation of special data areas, forced startup of software, and disruption of various output entrances.

5. Break the hard disk and rent it.

The main manifestations of computer virus attack on hard disk include destruction of data stored in the hard disk, failure to read and write disks, swapping operations, and incomplete write disks.

6. Destroy the system data area.

Since a large number of files and important data are stored in the data area of a hard drive, the destruction of them by computer viruses can often have devastating consequences. The main attack of the virus is the main boot sector, boot sector, FAT table and file directory of the hard disk, when these locations are damaged by the virus, the data can only be restored through professional data recovery.

The Internet speed at home can reach the standard, but what happens when it is good and bad when it is used?

The internet speed at home is unstable from good to bad, just turn on this small switch and the internet speed will be doubled in an instant.

If there is an abnormality in the network, it is usually caused by the abnormal operation of the router, so it is recommended to try again after replacing it.

It's a matter of the location of the carrier your phone is on. Due to the obstruction of too many buildings in the city, it is difficult to transmit data between the base station and the mobile phone.

You can call carrier customers**. Unicom 10010. Telecom 10000, Mobile 10086Report a malfunction.

The operator will usually send someone to verify that if the problem is severe, the operator may be able to add a signal amplifier near your home.

Find a network operator, they have always not given enough bandwidth, and often slow down the speed to be tough, just say no, just complain.

My broadband couldn't be used before, and they said that there was a problem with the hardware and the setting, so they didn't say that they might have a problem.

In the end, under the pressure of complaints, a few people came to check the computer room from my house, and it was still a problem with the computer room.

The Internet speed at home can reach the standard, but what happens when it is good and bad when it is used?