The first thing you want to check when your Dell laptop touchpad not working is an extremely simple item, but it's also an important element that even the smartest computer users forget to check occasionally: ensure that there is no hardware switch disabling the touchpad's functionality, as many laptops feature such a button for users who prefer to use an external mouse. Depending on your model of laptop, this may be a button near the touchpad or a function key.

Once you've checked that your touchpad is enabled at the hardware switch, the next step is to ensure that your laptop has the latest versions of the correct drivers installed for your touchpad. If you're using the latest version of Windows, you should be able to run a Windows Update check for updated drivers, which will then automatically download and install the most recent version for your specific laptop model. Instead of a hardware switch, some laptops feature a software switch within the custom software for your touchpad that can enable or disable the touchpad's functionality (though some laptops feature both). Once you've updated the drivers, ensure that the device is properly enabled on the software side.

If your touchpad still isn't working, it's time to start considering possible hardware problems. We assume you're comfortable working with the components of a laptop, but even if you are, here are a few basic safety tips to always keep in mind when working with delicate micro-electronics:

- Power Down
Always unplug your laptop from the power adapter and remove the battery before beginning any repair work.

- Stay Grounded
Always ensure that you are electrostatically grounded by wearing an anti-static wrist strap.

- Be Gentle
You don't want to replace any more of your laptop's components that you absolutely have to.

- Never Lose Screws
Keep a small dish or similar container handy nearby for any small screws you remove during your repairs, and ensure that you carefully note where you removed them from – you can't leave any out when you're re-assembling your laptop.
 

Now that you've got those basic safety tips in mind, open your laptop's case and ensure that all connections from the touchpad to the laptop mainboard are secure and undamaged. Because laptops are moved much more than desktop computers, it's possible that the cable has come loose or unplugged. Ensure it is properly seated, and then replace your laptop's case and see if that has fixed your problem.

If you're still running into difficulties, it's time to accept that you must replace your touchpad. Find a compatible replacement part for your Dell laptop model, and open the case again. Being extremely careful, remove the old damaged touchpad and replace it with your newly purchased touchpad. Replace the laptop cover, reconnect the power and boot up your laptop. If your repair was a success, you should have a brand new touchpad that works perfectly. If not, it might be time to replace the old touchpad and send it to a fully qualified professional for repairs.