Good to excellent signal strength, 1 mbps

Is it a desktop or laptop?

have you tried disabling the Standby mode and Hibernate mode?

Try a couple things:

1.) In your router's settings, changle the channel it's broadcasting on.
2.) If step 1 doesn't work, try swithing the router to "g only" broadcast mode.
3.) Update your wireless drivers
4.) Press the red button. Do it.