UEFI vs BIOS
Also searched as: uefi · bios · firmware · motherboard firmware
What it means
The low-level menu that runs before Windows loads, where you set memory speed, fan curves, and boot options. "BIOS" is the old name; "UEFI" is the modern version, but people use the words interchangeably.
More detail
This is where XMP/EXPO, Resizable BAR, and fan settings live. Every board's menu looks different, which is why guides can only teach the concept, not the exact clicks. The universal safety net is that you can reset it to defaults — usually a menu option or by clearing CMOS — if a change goes wrong.
The Compy Blackbook holds 174 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
See Compy →