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[3] [4] Devices may not have a dedicated Reset button, but have the user hold the power button to cut power, which the user can then turn the computer back on. [5] Out-of-band management also frequently provides the possibility to reset the remote system in this way.
A QWERTY keyboard layout with the position of Control, Alt and Delete keys highlighted. Control-Alt-Delete (often abbreviated to Ctrl+Alt+Del and sometimes called the "three-finger salute" or "Security Keys") [1] [2] is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl+Alt+Delete.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 December 2024. Restoring the software of an electronic device to its original state For the Tilian Pearson album, see Factory Reset (album). A factory reset, also known as hard reset or master reset, is a software restore of an electronic device to its original system state by erasing all data ...
If the system has just been powered up or the reset button was pressed ("cold boot"), the full power-on self-test (POST) is run. If Ctrl+Alt+Delete was pressed (" warm boot "), a special flag value stored in nonvolatile BIOS memory (" CMOS ") tested by the BIOS allows bypass of the lengthy POST and memory detection.
In such cases, a second timer—which is started when the first timer elapses—is typically used to reset the computer later, after allowing sufficient time for data recording to complete. This allows time for the information to be saved, but ensures that the computer will be reset even if the recording process fails.
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It is often used to recover from freezes, or to reboot a computer without corrupting the filesystem. [1] Its effect is similar to the computer's hardware reset button (or power switch) but with many more options and much more control. This key combination provides access to features for disaster recovery.