Have you tried a hard reset?
(You disconnect all electricity, press the reset button which may require the use of a small object such as a pen or pin, depending on what you prefer....)
Also, please post the make/model of the router if that does not work.
---------- Post added at 04:48 PM ---------- Previous post was at 04:47 PM ----------
Originally Posted by strollin
If I had planted a virus in his computer it would never work again!
Aka: Logic bomb.