Nexus 7 drops wi fi connecting as soon as it connects

[Trops]

Hello,
Just got my nexux 7 less than an hour ago, Pretty disappointed already : (
Everytime it connects to my router it instantly looses the connection and say the router is out of range ><
The signal strength is pegged out full.
my router is configured correctly, all other wireless devices connect flawlessly!!!
I did a google search and what few results come up  have absolutely nothing to do with  connecting the nexus 7 to anything.
Just wondering am I missing something obvious, since no one else is having the problem, or should I just return it right away?

Its not rooted, I dont even know what that is, and I dont care right now!
No apps can be messin with it cuz it wont stay connected long enough to do anything.
The damn thing is usless the way it is now.

[Trops]

Thank you Chex313, I had to change to the lower frequency in my router.
Pretty deceptive on nexus'  part for not making that info more available.
I personally dont know anyone that still has a router that runs  only at those low frequencies.