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The Screen of Death in Windows 10, which includes a sad emoticon and a QR code for quick troubleshooting A Linux kernel panic, forced by an attempt to kill init The Mac OS X kernel panic alert. This screen was introduced in Mac OS X 10.2, while the kernel panic itself was around since the Mac OS X Public Beta.
In computing, BIOS (/ ˈ b aɪ ɒ s,-oʊ s /, BY-oss, -ohss; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is a type of firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). [1]
Preview builds of Windows 10, Windows 11, and Windows Server (available from the Windows Insider program) feature a dark green background instead of a blue one. [26] [27] [24] Windows 3.1, 95, and 98 supports customizing the color of the screen [28] whereas the color is hard-coded in the Windows NT family. [28]
Typical POST screen (AMI BIOS) Typical UEFI-compliant BIOS POST screen (Phoenix Technologies BIOS) Summary screen after POST and before booting an operating system (AMI BIOS) A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. [1]
INT 10h is fairly slow, so many programs bypass this BIOS routine and access the display hardware directly. Setting the video mode, which is done infrequently, can be accomplished by using the BIOS, while drawing graphics on the screen in a game needs to be done quickly, so direct access to video RAM is more appropriate than making a BIOS call ...
Sometimes an interrupted flash upgrade of a PC motherboard will brick the board, for example, due to a power outage (or user impatience) during the upgrade process. It is sometimes possible to un-brick such a motherboard, by scavenging a similar but otherwise broken board for a BIOS chip in the hopes that the BIOS will work even halfway, far ...
Some motherboards have a built-in display to diagnose hardware problems. Most also report POST errors with audible beeps, if a PC speaker is attached. Such motherboards make POST cards less necessary. When these diagnostic cards were first introduced motherboards were expensive and well worth troubleshooting and repairing.
MS-DOS and all versions of Windows after Windows 3.1 (Windows 95, Windows 98, Windows Me, Windows 2000, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 and Windows 11) also display a black screen of death when the operating system cannot boot. There are many factors that can contribute to this problem, including the ones listed below.