Just a reminder to everyone, be very careful to not misplace the small white plastic piece securing the DVD/HD caddy drive cable to the motherboard. Accidentally lost mine during a re-pasting teardown. checked to see what a replacement would cost and found dell refused to replace the proprietary plastic white piece. It is the entire cost of the motherboard to replace. Although i saw a couple people on a different thread suggest paper or business card shoved into the slot with the cable till it was secure and making contact. luckily i found the small plastic piece at the bottom of my trash can covered in nasty goo while searching in desperation. remembered i had swept the floor the day before while my laptop was still apart.