It stopped shredding

It's a tedious process to clean it out. Most auto switch shredders use either a tiny little lever or an optical sensor in the paper feed slot. Usually removing the shred head, picking all the paper out and blasting all the dust out with air will clean it up. Then run a few sheets of paper with shredder lubricant (basically clean mineral oil) to oil the blades and it should be good to go again. Just be careful cleaning that cutting head. I've donated many drops of blood to office equipment over the years.

drive is seized-remove power cord- open cover rotate cutting drum slowly using motor drive gears - look for debris/gear teeth missing

Might be:
Paper too thick,
Too many sheets,
Shredder blades blunt.
Also head between blades for obstructions.

First, UNPLUG IT!
2 - Then remove the top. shredding part and flip it over.
3 - Carefully, with your fingers, not a pliers, remove all the paper bits and pieces from the underside of the shredder.
4 - Turn it back to right side up, and place it on the basket as it should be positioned, then plug it in and turn it on in REVERSE first.
5 - Once it starts, let it run until it stops; it should only be a couple of seconds.
6 - Turn the direction back to normal, and see if it will run that way.

Good luck,
-a.

try cleaning auto feed sensors

Common problem with paper shreds blocking the sensors on top and bottom of cutter asm. You may have to remove the top of unit to properly clean. When removing top, be very careful with the short ribbon cable. Lift top slowly and then reach under and disconnect from main board. Once top is off, you can cycle motor by hand and try to remove shreds with needle nose pliers. Of course, disconnect power first.

I’m happy to help further over the phone at https://www.6ya.com/expert/jayw_0e86fb055a7b73de

Is the paper bin full?....mine always shuts down when the paper bin is a little over half full.

Shredder drive gear is probably shredded - hard part to find or replace usually. Could mean a new shredder;-(

screw it