Laptop Touchpad Not Working: The Cursor Won't Move, Jumps Around or the Buttons Won't Click

The touchpad — the touch panel beneath the keyboard — seems like a simple part until it stops working. Then you discover a laptop is almost unusable without a mouse, and on a trip, in a café or in a meeting there isn't always one to hand. Causes of touchpad failure range from accidentally pressing a key combination to a swollen battery pushing on the panel from below. The first is fixed in a second; the second needs urgent attention.

How a touchpad works

A touchpad is a capacitive sensor: under the smooth surface is a grid of electrodes that detects changes in the electric field as a finger approaches. The touchpad controller turns those changes into coordinates and recognises multi-finger touches and gestures. The mechanical button — on modern models the whole touchpad clicks as a single key — sits underneath the panel. The touchpad connects to the motherboard via a thin ribbon cable, and gestures and sensitivity are managed by a driver in Windows.

So the problem can be in the settings and driver, in the cable, in the panel itself, or in something physically interfering with it.

Software causes

The touchpad is switched off

On most laptops the touchpad can be switched on and off with an Fn key combination or a dedicated key showing a touchpad icon. It's easy to switch off by accident. Windows also has an option that disables the touchpad when a mouse is connected — if you haven't used a mouse for ages but its receiver is still plugged in, the touchpad may be inactive.

The driver

After a Windows update a generic driver is sometimes installed instead of the manufacturer's. The cursor moves, but gestures, two-finger scrolling and palm rejection while typing don't work. The opposite also happens: a driver update leaves the touchpad completely unresponsive.

Sensitivity settings

Sensitivity set too high causes accidental palm clicks while typing; too low makes the touchpad feel unresponsive. It's a settings issue, but many people take it for a fault.

Hardware causes

A swollen battery

This is the most important cause to know about. In many laptops the battery sits directly under the touchpad. When a lithium-ion battery ages or is damaged, it can swell: the cells expand because of gas inside. A swelling battery pushes the touchpad up from below. Signs: the touchpad has become stiff to click, or clicks by itself; its surface has risen above the case; the bottom cover is bulging; the laptop no longer sits flat on the desk. A swollen battery is dangerous: if damaged it can catch fire. If you notice these signs, stop charging the laptop and get it to a technician as soon as possible.

The cable

The touchpad's thin cable can come out of its connector after an impact, be damaged during an earlier repair or oxidise. Symptoms: the touchpad works intermittently, fails when you press on the case, or isn't detected by the system.

Spills

Liquid spilled on the keyboard often runs down to the touchpad and under it. Moisture on the surface makes the cursor move erratically, and moisture inside corrodes the contacts and controller. Sometimes the touchpad fails several days after the spill.

Damage to the panel or button

A cracked surface, a dropped laptop or a pushed-in button — mechanical damage means replacing the touchpad or its button. On many thin models the touchpad is attached to the top case and only comes out when the laptop is fully disassembled.

Interference from the power adapter

If the cursor jumps or the touchpad goes haywire only while the laptop is charging, the cause may be a poor-quality adapter or lack of grounding. Capacitive sensors are sensitive to electrical noise, and a cheap power adapter can make a touchpad almost unusable.

Dirt and damp fingers

A greasy film, hand cream residue or damp fingers prevent the sensor from detecting touches correctly. It isn't a fault, but many people mistake it for one.

Gauging the scale of the problem

If the touchpad doesn't work, a mouse works normally and there's no physical deformation, the cause is most likely the settings or driver. If the touchpad appears in Device Manager but doesn't respond, the controller may have a hardware fault. If it isn't listed at all, a cable or connection problem is likely. And if the touchpad is stiff to click, raised, or the case is deformed, the battery needs checking immediately.

What our technician does

1. Checks the settings, key combinations, driver and touchpad behaviour in different modes.
2. Checks the battery for swelling and safely replaces it if needed.
3. Inspects the cable, connector and controller for oxidation and physical damage.
4. Tests the touchpad on and off the charger and checks the power adapter.
5. If needed, replaces the touchpad, its button or cable.

A real example

A teacher in Nadzaladevi contacted us because the touchpad on her Acer laptop had become very stiff to click and sometimes "clicked" by itself, opening unwanted windows. She thought it was a driver glitch and had reinstalled it several times. On inspection the touchpad was visibly raised and the bottom cover slightly bulged. Under the touchpad was a swollen battery that was already pressing on the panel. We safely removed the old battery, fitted a new one and checked the touchpad and case mounts. The touchpad worked as before — and, more importantly, the fire risk was removed.

Call a technician

If your touchpad isn't responding, the cursor jumps or the panel has become stiff to click, we'll come to any district of Tbilisi around the clock. Learn more on our laptop repair and laptop diagnostics pages.