Ans: Here is a drill checklist you can use If your Dewalt drill is not working: 1. Corded Drill: Verify the cord if it's damaged or not. 2. Cordless Drill: Check the batteries if they are charged or working properly. In case replace them. 3. Check the switch if it's dirty or damaged. 4. Check the chuck if it's stuck and drill is properly ventilated. 5. Check the Clutch if it's working properly or not. 6. Verify if the motor is overloaded or not. 7. Examine the fuse if it's blown or not.