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Today, we're going to update the BIOS of a Dell laptop. For the purpose of this tutorial, I'm using the Dell Inspiron 5570, but the procedure should be the same for all recent Dell laptops. The BIOS is the first piece of software that the computer executes - even before Windows launches. BIOS upgrades often come with support for new hardware or security patches, but sometimes the upgrades are minor. Dell typically uses three levels of urgency: optional, recommended, and urgent. I recommend that you read the release notes for a particular update to determine whether it's an urgent patch. Before we start, I need to add a disclaimer here that you're applying the BIOS update at your own risk; I'm simply following the procedures that were laid out by Dell Support. Let's go over some of the prerequisites, which again come directly from Dell. First, make sure to have your battery inserted in y