This article describes the factory reset proceedure. (http://support.slingmedia.com/get/KB-1000038)
However, you should check closer to the network light of your Slingbox. It should at least flash after performing a reset. If it appears to be dimly lit while flashing, its possible that your AC adapter has gone bad.
If you already performed a reset to the Slingbox hardwired to the router and you have the same trouble, we recommend that you contact us for further assistance.
The Slingbox Answers Forum Moderation Team.