How to disassemble Lenovo ideapad 300-15ISK

posted in: 6. IBM & Lenovo | 8
Lenovo ideapad 300-15ISK laptop

In this guide I explain how to disassemble Lenovo ideapad 300-15ISK laptop. I attempted to make this disassembly guide very detailed and clear so it’s easy to follow.

I’ll be using following tools: PH1 Phillips screwdriver, case opening pry tool and tweezers.


Remove two screws from the cover on the bottom.

Keep these screws separately, they are thicker than other screws.

Remove screws from bottom cover

Slide the cover to the shown direction and remove it from the laptop.

Remove bottom cover


Remove four screws securing the hard drive assembly.

Lenovo ideapad 300-15ISK hard drive

Slide the hard drive to the left (yellow arrow) to disconnect it from the motherboard.

Remove the hard drive. Upgrading this regular 2.5″ SATA hard drive to a 2.5″ solid state drive will speed up the laptop significantly.

Disconnect and remove hard drive

Also, here you can access both memory slots. It’s not necessary to remove the memory module.

This laptop can handle up to 16GB (2x8GB) DDR3-12800 SODIMM RAM modules.

Lenovo ideapad 300-15ISK memory slots


Remove three screws securing the keyboard.

Remove keyboard screws


I’m using flat pry tool to separate the keyboard from the case.

Lift up keyboard from bottom case

After the keyboard separated from the case you can continue removing it with your fingers.

Continue removing keyboard

Slide the keyboard towards the display assembly to access the connector underneath.

In the next step I’ll show how to release the keyboard cable.

Access keyboard cable connector


On this picture the keyboard connector shown in the locked state. It must be unlocked in order to release the cable.

Keyboard connector locked

Lift up the locking tab (red arrow) and pull cable out (yellow arrow).

Unlock connector and release keyboard cable


Now you can remove the keyboard.

Lenovo ideapad 300-15ISK keyboard removed


Remove two screws securing the top case assembly.

Disconnect the power button cable and trackpad cable.

Remove screws and disconnect top case cables

Unlock the connector (red arrow) and pull the cable out (white arrow).

Unplug power button board cable


Remove seven screws from the bottom.

Two screws I marked with yellow circles are thicker than other screws.

Remove screws from bottom of laptop


Start separating the top case assembly from the bottom. I’m using plastic pry tool for that.

Separate top case from bottom

Continue separating the top case with your fingers. You’ll have to apply some reasonable force to unsnap the top case from the bottom case.

Continue removing top case

Remove the top case (palmrest) assembly.

Lenovo ideapad 300-15ISK palmrest removed

On the other side you can access the trackpad and power button board.

Access trackpad and power button board

STEP 10.

The optical drive was secured by one screw we removed in the step 7.

Access optical drive

Push the optical drive out of the bottom case and remove it.

Lenovo ideapad 300-15ISK optical drive removed

In Lenovo ideapad 300-15ISK laptop the DC power jack attached to the harness. It can be easily removed and replaced if necessary.

Lenovo ideapad 300-15ISK DC power jack harness

STEP 11.

Unplug the DC jack cable from the motherboard. The connector is hidden on the other side of the motherboard but it’s not far away from the edge.

Disconnect power jack cable from motherboard

Remove the DC jack power harness.

Remove DC power jack harness

STEP 12.

In Lenovo ideapad 300-15ISK you can remove the battery ONLY after you remove the top case.

The battery connected to the motherboard via the cable.

Access battery connector

Unplug the battery cable from the motherboard.

Disconnect battery cable from motherboard

Remove two screws securing the battery.

Remove battery screws

Close the display and place the laptop upside down.

Remove the battery. Carefully pull the battery cable through the opening in the case.

Lenovo ideapad 300-15ISK battery removed

STEP 13.

Unplug the display cable from the motherboard.

Disconnect display cable from motherboard

Unroute the display cable from the guided path.

In order to unroute Wi-Fi antennas we’ll have to disconnect them from the wireless card first.

Unroute display cable

Unplug Wi-Fi antennas from the wireless card.

Disconnect Wi-Fi antennas from wireless card

It will be easier to unroute Wi-Fi antennas if you remove the optical drive board.

Unlock the connector, release the cable. Remove one screw securing the board and remove it.

Remove optical drive board

Now you can pull Wi-Fi antennas through the opening in the case and unroute it from the guided path.

Unroute Wi-Fi antennas

STEP 14.

Remove four screws securing display hinges.

Remove screws securing display hinges

Separate the display assembly from the laptop base.

Lenovo ideapad 300-15ISK display assembly removed

STEP 15.

Remove three screws securing the motherboard.

Disconnect the speaker cable (red square) and USB board cable (red rectangle).

Remove motherboard screws and disconnect cables

Lift up and remove the motherboard.

Lift up motherboard

On the other side of the motherboard you can access the cooling fan assembly and SMOS battery.

Yes, in Lenovo ideapad 300-15ISK laptop it’s necessary to remove the motherboard in order to remove and replace the cooling fan.

Lenovo ideapad 300-15ISK motherboard removed

STEP 16.

Disconnect fan cable from the motherboard.

Remove one screw securing the fan.

Disconnect cooling fan cable

Peel off black tape securing the fan to the heatsink.

Peel off black tape from fan

Remove and replace the cooling fan if necessary.

Lenovo ideapad 300-15ISK cooling fan removed

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8 Responses

  1. Lawrence Harman

    I found these instructions VERY clear and helpful. Just made a donation to thank you and support the site. One very important question: I have a 17″, are there any important differences between this 15 and my 17? Also I need to replace upper and lower cases (main body and display), please tell me places I might find these plastic case/cover parts. Thanks, Lawrence.

  2. IML Tech

    @ Lawrence Harman,
    Thank you for your donation. There shouldn’t be much difference between 15″ and 17″ models. I buy spare parts on eBay.

  3. JohnAlan

    Hi Master,
    I would like to know that is there anyway to fix the display hinge as the plastic part is broke and screw are not attach to it.
    Thanks, Alan.

    • IML Tech

      @ prince,
      You can see the CMOS battery in the step 15 on the last picture. It’s located under the heatsink. It’s a black disc with two wires plugged into the logic board.

  4. Zu Mi

    very professional, clear and strightforward. It helped me a lot. I highly appreciate it.
    thank you

  5. Gary

    I spilled water on my lenovo 300 laptop and I quickly turned it off and turned it upside down. I had to blow the it with a hair dryer. Now it’s not turning on. I later realized that I made a mistake using a hair dryer. So I would like to know how much damage this caused?