An Additional Computer Is Causing Problems With My Router

Various issues could cause a specific computer to disrupt your network.

Sometimes a specific computer can cause problems on your network as it brings excess traffic through your router, for example. There are steps you can take to eliminate the problem.

Identification

First you need to identify which computer on your network is causing the problem. Try disconnecting just that computer from your network to see if the router problems stop. If the problems start up again when the computer is reconnected, you need to investigate what is happening on that computer.

Troubleshooting

The problem PC may be downloading a significant update or actively downloading files from a file-sharing network. Viruses or malware can also strain a heavily used network connection, so ensure the machine is fully scanned with your Internet security software.

If you eliminate all software and operating system issues, the problem could be caused by a faulty Ethernet or wireless card.

Security

Ensure that you are using the security features available on your router to stop unauthorized computers from causing problems. MAC-address filtering and wireless encryption will help protect your network.

References

• Microsoft: 10 tips for improving your wireless network
• Microsoft: Troubleshooting network connection problems