Before I got my laptop, I only used my desktop to go online. When my laptop arrived, I unplugged the internet cable connecting modem to my computer and connected a new one to my laptop. When I want to use my desktop to go online, I just switch the internet cables. After a week of doing that though, my laptop suddenly shows that I have three broadband connections (all connects using the same password), and my desktop couldn't connect anymore. My desktop could always connect before, so I assume I clicked the wrong things on my laptop that caused this connection problem. My desktop is windows XP while my laptop is windows 7.

I don't think that the issue is with Desktop or Latptop but your insternet connection.Please contact your ISP and they would help you with. There are a certain ISP that uses MAC address for authentication , there could be a possbility that a MAC address is registered there and so the other computer is not able to connect. Once you have your ISP issue resolved , get a ROUTER , with the help of that both laptop and desktop can go online without changing the cabe.

Hi, You may also try to reinstall the adapter driver for your desktop to check how it works. Due to this issue occurred recently, you could restore Windows XP to a previous state to see what the result is: How to restore Windows XP to a previous state If this persists, as this forum focuses on issues related to Windows 7, it is recommended to post at Windows XP forum for further help on this problem: Windows XP Service Pack 3 (SP3) Forum Good luck. Alex ZhaoPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

You can recreate dial-up connection on desktop and try again, probably it helps. This is an example of how to do it, you might want to take a look.