Translation guide
BIOS is a technical term for the firmware that initializes hardware during boot. In Japanese, it is almost always referred to by the acronym BIOS, pronounced バイオス. There is no common native Japanese equivalent.
The firmware used to perform hardware initialization during the booting process and to provide runtime services for operating systems and programs.
The standard term used in Japanese computing contexts. It is written in Latin script and pronounced バイオス.
BIOSの設定を変更する必要があります。
You need to change the BIOS settings.
パソコンの起動時にBIOS画面を表示するには、F2キーを押してください。
To display the BIOS screen when the computer starts, press the F2 key.
The katakana rendering of BIOS, commonly used in spoken Japanese or less formal writing. It is interchangeable with the Latin script form.
BIOS is pronounced バイオス (baiosu) in Japanese, with four morae: バ (ba) - イ (i) - オ (o) - ス (su). The stress is flat.
The term 基本入出力システム is technically correct but almost never used in real-world Japanese. Stick to BIOS or バイオス.
バイオスをアップデートしたら、パソコンが速くなった。
After updating the BIOS, my computer became faster.
The literal Japanese translation of 'Basic Input/Output System'. This is rarely used in practice and may sound overly formal or outdated. It is mainly found in some textbooks or older documentation.
基本入出力システム（BIOS）は、コンピュータの起動に不可欠です。
The Basic Input/Output System (BIOS) is essential for starting a computer.