Introduction
Use this guide to replace the touchpad in your Lenovo IdeaPad 3-15ADA05 laptop. This model is also sold under alternate names, including Lenovo IdeaPad 3 15ADA05 and Model 81W1.
A faulty touchpad can cause the cursor to move erratically, respond slowly, or stop functioning altogether. This guide will help you remove the old touchpad and install a replacement to restore normal input functionality.
The touchpad is located beneath the palm rest and connects to the motherboard via a ribbon cable. It detects finger movement and translates it into cursor actions on the screen.
Before starting this repair, review the Lenovo IdeaPad 3-15ADA05 Troubleshooting Page on iFixit to ensure the issue is not software-related. If your touchpad isn’t responding at all, or gestures and clicks are no longer working properly, this guide is for you.
Caution:
- Power off your device and disconnect the battery before beginning any internal repairs.
- Use ESD-safe tools and work on an anti-static surface to avoid damaging sensitive components.
- Take care when detaching ribbon cables, as they are delicate and easily torn.
- If the battery is swollen, do not proceed—follow battery safety procedures.
For additional guidance, refer to the official Lenovo Hardware Maintenance Manual (HMM) for the 15ADA05 series.
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Remove the six 5 mm screws located at the top half of the laptop using a Phillips #0 screwdriver.
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Remove the four 2.5 mm screws located at the bottom of the laptop using a Phillips #0 screwdriver.
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Insert the opening pick between the base plate and the bottom of the laptop and pry the clips loose around the edge until the base pops off.
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Using a #0 Phillips head, remove the five M2 x 3.5mm screws holding the battery in place.
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Using the opening tool, disconnect the battery connector from the motherboard, and then remove the battery.
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Remove the five 2.5 mm screws securing the motherboard and fan to the chassis.
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Lift the motherboard to gain access to the screws that are securing the touchpad.
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Remove the two 2.5 mm screws securing the touchpad.
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Pull the touchpad to the inside of the chassis.
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Remove the touchpad from the laptop.
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To reassemble your device, follow these instructions in reverse order.
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