It can happen that you start having problems with a wireless network which worked well in the past. This might be due to the fact that the its settings may have been changed accidentally or its network profile, as saved on your computer, got corrupted for some reason. In such scenarios it helps to delete the profile of your wireless network and start fresh: have Windows 7 detect it again, introduce your connection details, etc. This tutorial will show how to delete the network profile of a troublesome wireless connection.

Removing the Troublesome Network Profile

Open the Network and Sharing Center. There, on the left side column, click on "Manage wireless networks".

In the Manage Wireless Networks window, you can see the profiles of all the wireless networks to which you connected to in the past.

Select the network with which you are having trouble, and click Remove.

Confirm that you want to remove the network profile.

The profile of the wireless network is now deleted. Windows will detect that network as if it was a new discovery and you will be able to enter all the details again and connect to it.

Connecting Once Again to the Wireless Network

When connecting again, please read the tutorial recommended below and follow all the steps carefully. It might make the difference between solving your problems and experiencing them again:

• How to Connect to Wireless Networks
• How to Connect to Hidden Wireless Networks

Troubleshooting Problems with a Wireless Network

If you keep having problems even if you removed the profile of the wireless network and connected to it again, read the following articles:

• Troubleshoot Internet Connection Problems over a Wireless Network - this guide shows how to use the Windows 7 built-in troubleshooting tools to fix problems with connections to wireless networks;
• Troubleshoot Wireless Network Connection Problems by Yourself - this is a step by step chart with questions and answers. Answering a series of questions takes you to the most probable root-cause and its solution.