I have a Whirlpool Duet dryer model #GEW9200LW0 IT WONT START! The controls light up but all it does is beep when I press and hold the start button. I have tried.

Made sure the door was closed.. lol;)
Unplugging and plugging back in
Locking and unlocking the controls
Checked the breaker box

The drum will turn both ways... I am sooooo frustrated three kids and no dryer AHHHrr. I so don't want this to cost me a lot of money if it doesn't have to. Just got done spending $300.00 on the dishwasher! Any HELP would be GREATLY appreciated.