lid hinge broken

I'm a 69 year old female. My husband isn't very handy so I decided to order the parts and do it myself. I didn't know how to take the machine apart so I just moved the washer part so I could unscrew the screw. I dropped the screwdriver between the adj. and side of the washer. I guess you won't be telling this story. I did get the parts on and the lid is working and so is the machine. Valerie Guyot