Check your wireless card.
If you are using a desktop, make sure you are using a linksys brand wireless card.
If it is a laptop, it should work with almost all routers.
All the ethernet ports light up and flicker when I plug in the power but the power and WLAN lights...
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All the ethernet ports light up and flicker when I plug in the power but the power and WLAN lights do not come on. This seems intermittant but it has been off for a long period of time this time.