BIOS and UEFI control the basic functions of the PC. Updating them is risky, but can bring important benefits.

If you're wondering what your computer's BIOS or UEFI is, and whether or not you need to update it, you've come to the right place. I'll explain what these terms mean, what these pieces of software do ...

UEFI (Unified Extensible Firmware Interface) is a standard designed to replace the venerable PC BIOS. Does your system support UEFI yet? Watch out for those 3 Tbyte hard drives if you don't. UEFI ...

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A tiny BIOS chip lurks inside every computer, sitting on your motherboard to breathe life into your system when you press the power button. It not only powers your PC, but helps protect it, too—as ...

David Nield is a technology journalist from Manchester in the U.K. who has been writing about gadgets and apps for more than 20 years. He has a bachelor's degree in English Literature from Durham ...