2016 Dell Inspiron i3543 15.6-inch Touchscreen Laptop PC, Intel Core i3-5005U 2.00 GHz, 4GB DDR3L RAM, 1TB HDD, DVDRW, HDMI, Bluetooth, MaxxAudio, Windows 10 802.11n high-speed wireless LAN, 10/100/1000 Ethernet, Bluetooth 4.0, 3-in-1 card reader, 1 USB 3.0, 2 USB 2.0, HDMI, Headphone output/Microphone input combo, Waves MaxxAudio, HD Webcam.15.6 in HD LED-backlit touchscreen with TrueLife Intel Core i3-5005U 2.00 GHz Processor, Intel HD Graphics 5500 with shared graphics memory.4GB DDR3L 1600 MHz Memory, 1TB 5400 rpm Hard Drive, Tray load DVD Drive (Reads and Writes to DVD/CD).Windows 10 Home Pre-installed, 4-cell Lithium-ion Battery (up to 7 hours), Black Proper cleaning kits should be used to clean and keep your LCD displays in a crisp clear pristine condition.Never spray any cleaning solutions directly on to the screen; spray it into the cleaning cloth. If you have installed a screen protector, it may be preventing the touchscreen from registering that you are touching the screen (this may occur if it is not designed for a capacitive touchscreen or has bubbles in it).Shut down and restart the computer. Attach a mouse to the computer. Get to your computer's product page, and to the Advanced tab. Choose a Diagnostic Test tab.Scroll down until Touchscreen appears and highlight it.