Asus X551CA CMOS Battery Replacement

Turn the laptop upside-down and remove the following screws using a Phillips #0 driver:

Two 9.5 mm screws in the middle of the back edge, and one 9.5 mm screw in the right edge

Two 4.3 mm screws in the back corners

One 17.5 mm screw at the left edge near the optical drive

Three 4.3 mm screws in the front edge

Use the plastic opening tool to separate the keyboard plate cover from the bottom cover. In order to do this, insert the plastic opening tool in between the keyboard plate cover and the bottom cover, then slide along edges to pry open.

Locate the three ribbons connecting the keyboard plate cover to the bottom cover.

Invert the laptop in order to gain access to the ribbons.

Remove each ribbon by flipping the small white plastic flap up and gently pulling on the ribbon.

Now that the ribbons have been detached from the bottom cover, carefully remove the keyboard plate cover. Once it has been removed, place it in a safe and moisture free area so it does not get damaged.

Unscrew the three 5.5 mm Phillips #0 screws with the Phillips #0 Screwdriver.

Once the screws have been removed, place your fingers on the left corners and push the hard drive towards the right edge of the laptop (relative to the picture).

Once it is free, remove the hard drive from its internal cavity.

Using the Phillips #0 Screwdriver, unscrew the 5.5 mm Phillips #0 screw that holds the spacer in place.

Remove the spacer from the laptop by gently sliding it towards the right edge of the laptop.

Use the Phillips #0 Screwdriver to unscrew the 3.2 mm Phillips #0 screw which attaches the WiFi card to the motherboard.

Disconnect the Wifi card from the motherboard by gently sliding it towards the right edge of the laptop.

Remove each of the two small antenna connections by disconnecting one wire at a time. Each wire should easily unsnap from the Wifi card.

Remove the battery from the laptop by applying pressure on both ends and lifting it out of the case.

With the Phillips #0 Screwdriver, remove the nine 5.5 mm Phillips #0 screws which hold the motherboard in place.

Now, locate the two wires connected to the motherboard.

Remove the wires by easily pulling them parallel to the motherboard's surface.

Remove the LCD display connection by gently pulling on the attached wire.

Gently lift any tape that may be holding the connection.

Remove the motherboard from the case by gently lifting it upward.

Flip over the motherboard and locate the CMOS battery.

Use the plastic opening tool to pry the battery out of its plastic casing in the motherboard.

Lastly, lift and remove the CMOS battery from the motherboard.