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On Windows computers, hibernation is available only if all hardware and device drivers are ACPI and plug-and-play–compliant. This allows some desktop computers to hibernate quickly to SSD in the event of a power failure and power supplied to even a lightweight or aging UPS. Hibernation can be invoked from the Start menu or the command line. [10]
On switching the computer back on, the computer is restored to its state prior to hibernation, with all programs and files open, and unsaved data intact. In contrast with standby mode, hibernation mode saves the computer's state on the hard disk, which requires no power to maintain, whereas standby mode saves the computer's state in RAM, which ...
In Windows, this can be configured to enter one of the "sleeping modes", i.e. "suspend to RAM" (with fast wake up by pressing any key) or "suspend to disk" (i.e. hibernation, where waking up will require pressing the power button, restoring all running applications in their current running state), or to shutdown the PC completely (closing all ...
Likewise, Linux distributions include a variety of power management settings and tools. [5] There is a significant market in third-party PC power management software offering features beyond those present in the Windows operating system. [6] [7] [8] Notable vendors Data Synergy's 'PowerMAN', [9] Faronics' 'Power Save', [10] [11] and Verdiem's ...
To decide what to do when the computer's on/off button is pressed, such as whether to shut down or to enter standby. Whether to allow Hibernation (some systems become unstable when restarting). Allows the user to configure UPS (if available). Since Windows Vista, additional hidden power options are available for fine tuning power features.
Advanced Configuration and Power Interface (ACPI) is an open standard that operating systems can use to discover and configure computer hardware components, to perform power management (e.g. putting unused hardware components to sleep), auto configuration (e.g. Plug and Play and hot swapping), and status monitoring. It was first released in ...
powercfg must be run from an elevated command prompt, and, under Windows XP, it requires workstation Administrator or power user rights. Power Schemes are configured on a per-user basis. The most common cause of problems with power saving and hibernation on Windows systems is an incompatible device driver.
In computers capable of Wake-on-LAN, the NIC(s) listen to incoming packets, even when the rest of the system is powered down. If a magic packet arrives and is addressed to the device's MAC address, the NIC signals the computer's power supply or motherboard to awaken. This has the same effect as pressing the power button.