Hi Jerome,
Is any other system/device able to detect your home network? If so, try doing a network power cycle-
1. Shut down the system.
2. Power off the Router.
3. Power off the Modem and wait for a minute.
Note: In some cases, modem and router are combined in a single device.
4. Restart the Modem and wait for 30 seconds.
5. Restart the Router, wait for another 30 seconds.
6. Start the system.
If it still does not work, try deleting the wireless network profile on the system and then connecting again. The steps to delete the network profile are:
1. Click Start > Control Panel. In the search box, type wireless, and then click Manage wireless networks.
2. Right-click the profile for your wireless network and click on Delete.
3. Click OK.
4. Once the profile has been deleted, go to the available wireless networks and choose to connect to your network.
5. It will ask you for the network key. Please enter that. A new network profile will be created and you should be connected.
Keep me posted. Please reply for any further questions.