How To Check Battery Performance In Dell Laptop. Fully charge your battery and leave it plugged for about 2 hours to cool it down. Immediately press F12 on the keyboard when you see the Dell logo screen.
Start your Dell laptop as you usually do. Turn off the laptop. You could also run hardware diagnostics by tapping F12 upon start up.
Click Start and type Control Panel.
A list of diagnostics and component tests should pop up. When SupportAssist does not show up in the search results go to the. The Dell logo screen will appear when the computer is turned on. There will be a button next to them.
