Default No mobile connectivity after flashing ROM, NEED a fresh start

I recently flashed CM11 on my HTC one sprint to find out that there was no data connectivity, I was able to make calls and send text just not refresh apps over 3g etc. I did a factory reset and then tried flashing over CM 10 and still nothing. Went back and fourth and nothing. Tried Viper ROM and took everything off my phone and had to reinstall CWM onto it. Loaded CM 10 and 11 back onto it and still nothing. Tried GURU Reset method and the touch doesnt work but can still see theres no connection not even phone calls anymore. Is there a way to fix this or be able to start fresh. I dont care if I lose root, ill do it again, I just need my phone to work again.

Thanks for your help,
Tim