Check and replace its back-light inverter board. If you wish to get some details, check the site linked here. Pull up older posts. Check the site in 'Mosaic' view. It will make search easy. http://electronicshelponline.blogspot.com/
not been silly but did it ask you for the router code thats on the box,it did this with my stepsons new tablet...he eventually did it through his phone (he had internet on his htc and synced it through that)