In computing, BIOS (, BY-oss, -ohss; Basic Input/Output System (also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). The BIOS firmware comes pre-installed on an IBM PC or IBM PC compatible's system board and exists in UEFI-based systems too. The name originates from the Basic Input/Output System used in the CP/M operating system in 1975. The BIOS originally proprietary to the IBM PC has been reverse engineered by some companies (such as Phoenix Technologies) looking to create compatible systems. The interface of that original system serves as a de facto standard.
The BIOS in modern PCs initializes and tests the system hardware components (Power-on self-test), and loads a boot loader from a mass storage device which then initializes a kernel. In the era of DOS, the BIOS provided BIOS interrupt calls for the keyboard, display, storage, and other input/output (I/O) devices that standardized an interface to application programs and the operating system. More recent operating systems do not use the BIOS interrupt calls after startup.Most BIOS implementations are specifically designed to work with a particular computer or motherboard model, by interfacing with various devices especially system chipset. Originally, BIOS firmware was stored in a ROM chip on the PC motherboard. In later computer systems, the BIOS contents are stored on flash memory so it can be rewritten without removing the chip from the motherboard. This allows easy, end-user updates to the BIOS firmware so new features can be added or bugs can be fixed, but it also creates a possibility for the computer to become infected with BIOS rootkits. Furthermore, a BIOS upgrade that fails could brick the motherboard. The last version of Microsoft Windows running on PCs which uses BIOS firmware is Windows 10.
Unified Extensible Firmware Interface (UEFI) is a successor to the legacy PC BIOS, aiming to address its technical limitations.
Mga sir pahelp po sana ako para mag remove ng bios password at mag reformat ng laptop po. No access po kasi ako sa bios and wala rin po akong manual, wala rin pong budget mag pa technician papahelp po sana ako ng mga DIY laptop ko po is HP elitebook 840 g8 po.
MGA PAPS SHARE KO LANG PO
PARA SA MGA LOPTOP NA MAY BIOS PASSWORD..
ITO LANG PO GAGAWIN MAG ENTER TAU NG PASSWORD SA BIOS NG KAHIT NA ANU NG ILAN BESES HANGGANG LALABAS UNG BIOS CODE PAG MERON NA PO GEGENERATE NIU LANG PO SA LINK NA ITO
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at magbibigay na ng password at un ung...
Help naman po jan. May Nabili ako pc galing banko kaso nakalock ung bios niya may pass. try ko na alisin batt at ung short ng jumper. help naman jan maraming salamat
Mga kaphc bakq matulungan nyo ako nabaklas ko na yung board hinanap ko din yung jumper ng cmos pero dko malocate. Malapit sa ram/malapit sa cmos slot.
Mga nagawa ko na:
Tanggalin ang power ,battery at bat. cmos 30mins press hold power button 30 secs. Then plug all.
Using backdoor. Wala din...
Mga boss pahelp naman paano po ba ma unlocked ang bios password ng Asus T100ta transformer book laptop . Wala po kasi syang cmos battery . Kahit rescue password lang po ng 2012/01/20 pls pahelp po.