In this guide I will be taking apart a Dell Inspiron 15 7000 series gaming laptop.
I have Dell Inspiron 15-7559 model as an example but all teardown steps should be the same for Inspiron 15-7557.
- Hard drive, SSD, battery removal – STEPS 1-3.
- Keyboard and top case removal STEPS 4-10.
- Cooling fans and display removal STEPS 11-14.
- Wi-Fi card, DC power jack and motherboard removal STEPS 15-18.
Loosen one screw securing the bottom cover and remove it from the laptop.
It may be necessary to apply some reasonable force to separate the cover from the case.
Under the cover you can access to the battery, both memory slots and both storage devices (SSD and 2.5″ hard drive).
Disconnect the battery cable from the motherboard and remove six torx T8 screws securing it to the case. Remove the battery.
Remove four screws securing the 2.5″ hard drive caddy. Unplug the hard drive cable from the motherboard. Remove the hard drive.
The solid state drive secured to the case by one screw.
Remove the screw and pull the SSD out of the socket.
The keyboard is secured to the top case by five latches.
Using a thin metal case opener (or any other similar tool) push the latch inside the case. The direction is shown by the red arrow.
When the latch is moved inside the case, insert the case opener under the keyboard and lift it up.
Repeat these steps for all five lathes to separate the uppers side of the keyboard from the top case.
Continue separating the keyboard from the top case.
It may be necessary to apply some reasonable force to separate the keyboard.
Move the keyboard towards the display assembly to get an access to the cables underneath.
Disconnect the keyboard data cable (wide) and the keyboard backlight cable (narrow).
Do you see the “Up” sign on both cables? That’s how you insert them back onto the connectors during the re-assembly process.
Here’s how to unlock both connectors. Lift up the locking tab so it opens up at a 90 degree angle. Pull the cable out of the connector.
Remove the keyboard.
Remove two screws securing the top case.
Disconnect the touchpad cable (wide) and the power button cable (narrow).
Remove four screws securing the top case to the bottom frame.
Using a thin plastic case opener (or any other similar tool) start separating the top case from the bottom.
Continue removing the top case. If it’s getting stuck on the back, use the case opener to crack the case.
Remove the top case assembly.
On the other side you can get access to the touchpad and the power button board.
Dell Inspiron 15 7000 series laptop has two cooling fans installed.
Disconnect both fan cables from the motherboard. Remove both fans (there are no screws securing them).
Now turn the laptop upside down to disconnect the display video cable and Wi-Fi antenna cables.
Unplug the display video cable (left rectangular) from the motherboard and unroute it from the guided path on the frame.
Disconnect both Wi-Fi antennas from the wireless card.
Unroute Wi-Fi antennas from the guided path on the frame.
Remove four screws securing the display hinges (two screws per hinge).
Separate the display assembly from the base and remove it.
In the next post I explain how to take apart the touch screen display in order to remove and replace failed video cable.
Remove one screw securing the wireless card and pull the card out of the socket.
Disconnect the DC jack harness from the motherboard.
Unroute the DC jack harness from the guided path on the frame.
Remove the DC jack.
Disconnect all cables from the I/O USB audio board (from top to bottom):
- I/O board power cable
- I/O board data cable
- Speaker cable
The data cable is locked by a metal clip.
First, lift up the metal clip (red arrow). Second, pull the cable out of the connector.
There is a small plastic hook securing the I/O USB audio board to the frame.
Push on the hook to release the board.
Remove the I/O USB audio board.
Disconnect the status LED board cable from the motherboard (red square).
Disconnect the CMOS battery (red arrow). The connector is hidden on the bottom side of the motherboard but it’s easily accessible.
There is a small plastic hook securing the motherboard to the frame. Push on the hook (yellow arrow) to release the motherboard.
Remove the motherboard from the frame.
Here’s a picture of the other side of the Dell Inspiron 15 7000 series (7559 7557) motherboard.
Now you can remove the heatsink and reapply thermal grease (if necessary).