To install Dell Updates click on your Window icon in the bottom left corner of your screen and select Dell Command | Update or, on some computers, it is called Dell Update. (If you do not find it you can try typing Dell in the windows search bar and it should pop up.)
Click on the blue button that says Check to check for updates.
If it finds any updates click the button that says Install to install them. You may need to restart the computer to finish the update installation.