This procedure addresses a number of symptoms that you might experience with your wireless network:
Verify the physical cable connections between all of your networking devices: access point (if present), router, and modem.
Ensure that the power outlets to which these networking devices are connected are live outlets.
Check the LEDs on the networking devices to make sure you are receiving power and that are no errors.
For connectivity issues, reboot your DSL or cable modem and wait for the LEDs to stabilise, then reboot your router and wait for the LEDs to stabilise, then reboot your access point (if present) and wait for the LEDs to stabilise. Finally, reboot your computer.
Other devices connected to the router may need to re-establish their network connections.
Some electronic devices, such as 2.4GHz - 5.8 GHz phones and microwave ovens, may interfere with the wireless signal and affect your wireless range and link quality. Try creating a wireless connection on a different channel.
Low link quality or range can be caused by environmental interference, such as lead-based paint and concrete walls. Try to move the antenna of the router or access point, or reposition the computer or wireless adapter. If possible, ensure that there are no obstructions between the wireless adapter and the router, or if you are using an access point, between the wireless adapter and the access point.
If you still have trouble using the wireless adapter, follow the procedure below that best describes your symptom.