Hi NovaInATeacup,

You may find the system model listed on the bottom panel of your system; turn the laptop upside down and check.. I understand that you have already tried updating the touch pad driver, however, I will suggest you to uninstall and re-install it:

• Click on 'Start' and right click on 'My Computer'.
• Click on 'Manage' and click on 'Device manager'.
• Exapnd 'Mice and other pointing devices''.
• Right click on the each entry listed and click 'uninstall'. (Check the box to delete the software)
• Once done, restart the system and click on the link: http://dell.to/QjjZDA
• Enter your Service Tag and select the operating system.
• Go to 'Input' and click on the touch pad driver.
• Click on it and click on “Download File”.
• Select “For Single File Download via Driver” and click on 'Continue'
• Select “Save” and save it to your desktop.
• Once the download is complete, right click on the driver on the desktop and click on “Run as administrator” and click on "Continue".
• Follow the on screen instructions to install the driver.
• Restart the system.

If the issue still persists, BIOS update might fix this issue:

Note: Please save any unsaved data as your system will restart automatically after updating the BIOS. Disconnect all the external peripherals like printer, camera, scanner, external hard drive, flash drive etc. Also, the battery should be charged 10% or above.

1. Click on the link to update the BIOS: http://dell.to/QjjZDA
2. Enter the Service Tag and select the operating system.
3. Go to ‘BIOS’ and select the latest BIOS for your system.
4. Click ‘Download file’ and click on ‘Continue’.
5. Click ‘Run’ to update the BIOS.

Keep me posted. Please reply for any further questions.