Note: Some manufacturers do not use screws to fasten components inside of the computer case. Some may use plastic or metal clips that fasten components to the computer chassis. Be careful to remove only screws that are holding components in place, and not the screws that hold components together. What type of screwdriver did you use to remove the screws? How many screws secured the side panels? Step 3: Antistatic Wrist Strap.Put on an antistatic wrist strap. Connect one end of the conductor to the wrist strap. Clip the other end of the conductor to an unpainted, metal part of the case. If you have an antistatic mat, place it on the work surface and put the computer case on top of it. Ground the antistatic mat to an unpainted, metal part of the case. Step 4: Remove the Hard Drive. a.Locate the hard drive. Carefully disconnect the power and data cables from the back of the hard drive.Which type of data cable did you disconnect?