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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.
Restart the computer • If you haven't recently restarted your computer or you don't restart your computer very often, we recommend that you restart the computer. This helps clear the internal memory (RAM), which often resolves many issues.
Power cycling is the act of turning a piece of equipment, usually a computer, off and then on again.Reasons for power cycling include having an electronic device reinitialize its set of configuration parameters or recover from an unresponsive state of its mission critical functionality, such as in a crash or hang situation.
In many cases programs may appear to be hung, but are making slow progress, and waiting a few minutes will allow the task to complete. Modern operating systems provide a mechanism for terminating hung processes, for instance, with the Unix kill command, or through a graphical means such as the Task Manager's "end task" button in Windows (select the particular process in the list and press "end ...
[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.
Windows Vista introduced a hybrid sleep feature, which saves the contents of memory to hard disk but instead of powering down, enters sleep mode. If the power is lost, the computer can resume as if hibernated. Windows 7 introduced compression to the hibernation file and set the default size to 75% of the total physical memory. [18]
In computer security, a cold boot attack (or to a lesser extent, a platform reset attack) is a type of side channel attack in which an attacker with physical access to a computer performs a memory dump of a computer's random-access memory (RAM) by performing a hard reset of the target machine.
Upon starting, an IBM-compatible personal computer's x86 CPU, executes in real mode, the instruction located at reset vector (the physical memory address FFFF0h on 16-bit x86 processors [62] and FFFFFFF0h on 32-bit and 64-bit x86 processors [63] [64]), usually pointing to the firmware (UEFI or BIOS) entry point inside the ROM.