Cant get wifi from home - NetGear WNDR3400 N600 Wireless Dual Band Router (WNDR3400100NAS)

NO PC stated at all , maker and model numbers, (hopeless )
no OS stated, is it windows, if yes which one of the many.
wifi:
are you at home or at starbucks trying for wifi.
are you near your home router or 100' feet away or worse via brick or concrete walls.

test the PC near your router, for functionality.
then if that fails, take your CELL smart phone and test wifi with that phone, turn on wifi , and 3/4G off.
this tells you what is wrong. doing that.
1: router bad. (or needs reset)
2: you are using the wrong credentials.
eg: SSID name, wrong encryption use WPA2, and passphrase.
do you know all that, if not wifi is going to be a problem.

last question, who owns your WIFI router, you or the cable or phone company? if not you , only they can help.

Then the problem is your wifi.

but does it work other wise
tell what it does good , bad or even ugly.
that tells us what's UP.
tell where you are,
home wifi
work wifi
Starbucks , air port ,etc wifi.
all that matters, all of if it, thanks.

Log onto the network. You will need the password for the network.

First of all, you must have the password which is set for your home WIFI. You can't do anything without it. Assuming you got the password, Go to tablet's Settings, turn on WIFI. When your WIFI router is displayed in the list, select it and you will be prompted for the password. Enter the password and click Connect. When you see Connected, it's done.

Have you tried mutiple wifi sources to verify its the tablet or just your home wifi, reinstall the wifi drivers if possible....

Reset router, and try again, if not reset to factory setting's..

try forgetting the wifi connection and then try connecting to it again

try updating the firmware to 2.2. if that does not work.
You may have to reset your Modem + Wifi Router

In my case, if I bring a new device home, my router won't allow it to connect because it is not recognize. Unplug both router and modem, plug them back ( router 1st ) and try again.

This issue never happens to me at home now but it still happens when I go out to bars or restaurant that offers wifi.... Turning off and on the wifi in your ipod touch a couple times usually fixes it.