Hi Venkata,
Welcome to Microsoft Community.
I'm Hahn and I'm here to help you with your concern.
There are several possible reasons why your touchpad is not working properly on your Dell laptop. Some of them are:
- You may have accidentally disabled the touchpad by pressing a dedicated key on the keyboard. The key is usually one of the function keys with the touchpad icon. Press Fn + touchpad key to enable or disable the touchpad.
- You may have outdated or corrupt touchpad drivers. To update them, you can go to the Dell website and enter your service tag to download the latest drivers for your laptop model. Alternatively, you can use Windows Update or Device Manager to check for driver updates.
- You may have disabled the touchpad from BIOS. To enable it, you need to boot your Windows to access BIOS. Then find the touchpad option and make sure it is enabled.
- You may have incorrect touchpad settings. To adjust them, you can go to Control Panel > Hardware and Sound > Mouse > Dell Touchpad and change the sensitivity, scrolling, tapping, gestures and other options.
I hope this helps you fix your touchpad issue. If none of these solutions work, you may have a hardware failure and need to contact Dell support for further assistance.
If there is anything not clear, please do not hesitate to let me know.
Your Sincerely
Hahn - MSFT | Microsoft Community Support Specialist