The most common reason that this problem would occur on that model washer is that the lid switch is broken. Check to see if it will click ok. If not, you may be able to push a pen or wooden Popsicle stick down into the slot to get it to switch on.
Even if it clicks ok, you would want to check it electrically be sure it will complete the circuit when engaged.
This diagram may help you (either now or later if we need to go further in troubleshooting this).
This is the switch on the top front right of the machine with the lid open. you will see two Phillip head screws holding it in place. easy fix is to unplug machine and take screws out of switch, clip wires and use wire nuts to connect another switch.
...clip wires and use wire nuts to connect another switch... Do I purchase another switch?