How to Replace the Motherboard on a MacBook

Power down the Macbook. Turn the device over. Take out the battery from the bay. This is done by the pressing of the two catches on the battery's side. Now pull up on the battery. Use the Phillips screwdriver to take out the screws on the bottom of the battery compartment. Remove the compartment.
Flip the Macbook back to the right-side position. Take out the screws on the corners of the rear of the device. Now remove the remaining screws on the three sides of the Macbook. Lift the top of the computer up. The housing will now come off the computer.
Raise the keyboard. Move it away from the computer's body. You will now see the motherboard. Disconnect the orange cord that connects the keyboard to the motherboard. Move the keyboard to one side. Take off the two wires that connect the side of the motherboard to the computer.
Use the screwdriver to take off the yellow tape located on the motherboard. Detach the gold video cable from the motherboard. Utilize the screwdriver to take off the screws on the motherboard.
Raise up the motherboard. Pull out the motherboard's power plug. Now replace the motherboard with the brand new unit.
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How to Get a Micro SD Card Unstuck From a Laptop

Pull the SD-to-Micro SD adapter out of the laptop’s compartment slot. Place the SD-to-Micro SD adapter on a table with the Micro SD card facing to the right.
Hold the SD-to-Micro SD adapter down on the table with your left hand. Hold the tweezers in your right hand.
Clamp the jaws of the tweezers on the end of the Micro SD card. Pull the Micro SD card out of the SD-to-Micro SD adapter with the tweezers.
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How to Remove the Keyboard in a MacBook (8 Steps)

Put the soft cloth down on a table. Close the lid of the MacBook and place it face down on the soft cloth. Turn the lock on the bottom panel to release the battery. Slide the battery out of the bottom and put it aside.
Use the Phillips jeweler's screwdriver to remove the three screws running across the long part of the 'L' shaped bracket inside of the battery compartment. Lift the 'L' shaped bracket up and out of the battery compartment.
Use the Phillips jeweler's screwdriver to remove the two screws, one on each side, at the end where the battery cable is located inside the battery compartment.
Lift up on the three metal levers in the battery compartment and remove the screws beneath each using the Phillips jeweler's screwdriver. Use the Phillips jeweler's screwdriver to remove the 2nd, 4th, 7th and 9th screws in the front of the battery compartment, counting from the left side.
Use the Phillips jeweler's screwdriver to remove the three screws from the bottom of the case; two at the back edge and one in the middle. Use the Phillips jeweler's screwdriver to remove the two screws on the outside of the case next to the battery compartment.
Use the Phillips jeweler's screwdriver to remove the two screws on the side of the case next to the optical drive. Remove the four screws from the back of the MacBook where the hinge is with the Phillips jeweler's screwdriver.
Turn the MacBook right side up and put it down on the soft cloth. Open the lid. Grab the back corners of the top plate of the MacBook from both sides. Wiggle the top plate loose.
Grab the top plate from both edges at the front. Slowly lift it up until you see the track pad cable's connector on the case. Pull the connector off the case. Remove the top plate and the keyboard from the case of the MacBook.
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