I have an Acer laptop and the scroll pad on the right has suddenly stopped working. How do I fix it?

You’ll probably have to replace the keyboard. It’s not a difficult or particularly expensive fix. A competent and well-equipped computer repair place should be able to do it in about 15 minutes while you wait.

But before you try that… have you rebooted? Run diagnostics on it? Checked to see if the driver is up to date? I’d try all of that first.

Sounds like a driver/device foul up to me. As @CWOTUS said, it could be an issue with the driver. We’d need to know more information about your laptop .. such as what operating system you’re running etc before we could advise further.

Sounds to me like the Synaptics driver got messed up. (Synaptics is the company that makes trackpads for most laptops; my last Acer had a Synaptics pad.) Mine did that, I reinstalled the driver, and voila; problem solved!

My wife’s Asus netbook has a Synaptics touchpad that recently stopped working shortly after each reboot (under Windows). Haven’t fixed it yet, but the work-around is to use the keyboard to navigate to the touch-pad controls in Control Panel, then manually re-enable the pad. It only takes a few key presses to do this, after which works normally until the next restart.

Why it keeps getting disabled on start up is still a mystery, but I assume it’s a software issue since the hardware works fine once re-enabled.