You can use a Dell laptop's touchpad - or its built-in mouse pad - in place of an external mouse. You can use the touchpad to move around the screen or to click on icons. But sometimes the touchpad can become unresponsive or slow to respond. The reasons for this could be the touchpad is dirty, settings are wrong or you may need to update the drivers for the touchpad that are available on Dell's website.
Turn off the laptop by holding the power button down for 15 seconds. Unplug everything except for the power cord. This includes speakers, printers, USB flash drives, external monitor, keyboard and mouse, scanners and PDAs. Make sure the touchpad is clean and has no dirt, grease or food on it. You can wipe the touchpad off with a damp cloth with a small amount of alcohol. Wipe gently, then turn the laptop back on.
Download the latest drivers for your touchpad. Browse to the Drivers and Downloads Page on Dell's website. Click the "Enter a Tag" button and a list of drivers for your laptop will be listed. If you do not have the Service Tag, click "Select Model," "Product Type" and "Product Model." Click "Confirm." Select the operating system and category. Click "Input Device Drivers" from the list, and click "Synaptics Driver -- Touchpad." Click the blue "Download" button on the right. Follow the on-screen instructions to download the device driver for your laptop.
Click "Start" and type "main.cpl" in the Search box. Click the "Dell Touchpad" tab. Click the picture of the touchpad and click the "Touchpad Settings" button. Make sure the "TouchCheck" check-box is checked. Move the slider bar all the way to the right. Un-check the "Tap to Click" check box. Move the slider in the "Touch Sensitivity" area to the right until it is three-quarters of the way toward "Heavy Touch." Click "Apply" and then "OK."