Good Day Jiachengqian1, My name is Carlo, I am also using Windows 11 pc and community member like you. Let us work together to sort this out. Here's the steps you can try. -Go to Device Manager. -Expand the Human Interface Device or Mice and other pointing device. -Look for HID Touchpad driver that was installed. Video showing a quick repair fix for your Acer Aspire laptop's touch pad Mouse stop working. You may have just installed a fresh copy of WIndows on your Ace 2. Check for Windows updates. Press the Windows key + I to open the Settings app and select Update & Security. From the left side, select Windows Update, then click on the Check for updates button from the right side. An outdated PC is prone to different issues, including this Acer Nitro 5 touchpad not working problem. Follow these steps: Press the Windows logo + R keys to open the Run dialog box. Type “devmgmt.msc” (no quotes) and hit Enter to open the Device Manager window. 4) Download the touchpad driver for Windows 10 from the support webpage of the manufacturer. Unzip the file if needed. 5) Then go to Device Manager. 6) Locate and expand category Mice and other pointing devices. 7) Then right click the device with the name XX (Depends on your laptop manufacturer) Pointing Device and choose Update Driver Acer Laptop touchpad not working Windows 11. Acer PC Has touchpad not working after Windows 10 Upgrade. Acer Laptop mouse Not working Win 11. Acer touchpad N After switching I2C to PS/2 from BIOS ,touchpad is working but the gestures are not working and when i install touchpad drivers downloaded from acer's site, The driver gets installed but gestures are not yet working. Switch to I2C on the bios again. Then, uninstall and delete the driver like this: hole and press and hold it for 30 sec. BIOS default: After power drain is done, power on the u nit, but as soon as you power on the unit keep pressing the F2 key so that it take you to BIOS. page. Press F9 and press Enter than press F10 and press Enter. the unit will restart. ubTqg.