[General] N7 now won't go online?

Hi.
New to this.
I've had a Nexus 7 for a few weeks and all seemed ok.
But now it won't go online - it used to.
It does the Google Search thing, but anything clicked on the eventual list only takes me to a blank page.
Do I need to factory reset?
Or is there something else?
(utube items if clicked show up immediately by the way) ????
Puzz

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