Classic Q & A on Windows System standby and sleep

Source: computer enthusiasts

Q: What are the advantages of standby and sleep? Or is it better to change sleep to shutdown?

A: Although the advantages of standby and sleep are obvious, ACPI/APM is required for both hardware and systems. If poor hardware or systems are supported, use the standby and sleep functions, data is easily lost, the system is unstable, or even crashes. At the same time, hardware changes can be made only when the system is shut down, such as device replacement and memory upgrade, therefore, neither of them can replace shutdown.]

Q: I accidentally lost the "standby" in "Start> shutdown". How can I recover it?

A: Generally, this type of problem can be solved by reinstalling the motherboard driver, or removing the hardware that supports "ACPI" in "Device Manager", and then restarting the machine, reinstall the hardware as prompted. If the system cannot be started after waiting or sleep on the newly installed system, or the system cannot be started after these functions are executed, check that STD and STR have been enabled in BOIS. If yes, check whether the hardware supports ACPI (especially the motherboard) or consider hardware conflicts.

Q: I am using Windows XP. In the screen saver window, I have selected "use password protection when restoring", but it is strange that it does not play any role. After the Screen Saver is started, the screen saver will end after you press the keyboard or mouse, and there is no window for entering the password!

A: In Windows XP, selecting "use password protection when restoring" does not work. Right-click Properties on the desktop, select advanced in the power options Properties window, and select enter password when the computer recovers from the STANDBY state ". In addition, the screen saver password of Windows XP is different from that of Windows 9x. The password cannot be set separately and can only be opened using the user password at system logon.

Q: Sometimes my computer has been used for a long time and I want to take a break. I chose to sleep my computer, but my computer often does not respond at all?

A: Sleep saves the data in the memory to the hard disk. Because the computer runs for a long time, some of the data that does not run frequently is saved to the virtual memory, in this case, if you choose to sleep and some data in the virtual memory fails to be released in time, the system will not respond after sleep. In this case, we recommend that you restart your computer.

Q: I often have to think about graph or programming, so I leave my computer. However, sometimes it takes too long to think about the computer, which often causes a crash. Why?

A: For many users who like plotting and programming, be sure to avoid sleep during program debugging, windows enables Screen Protection and sleep by detecting input signals (such as moving or clicking the mouse. During plotting and programming, computer work is always very busy, but it does not need to be input from outside. If the computer is sleeping at this time, data in the CPU and memory is in a "isolated" state. When the computer is awakened again, the CPU and memory resources need to be occupied because the computer itself is being awakened through software, in this way, memory data errors often occur, resulting in blue screens or even crashes. Therefore, you should try to save the disk before using the computer for a long time to avoid unnecessary losses.

Q: Why is the "enable sleep support" check box gray when the "power options> sleep" option is enabled on the desktop?

A: The remaining space on the current system disk is smaller than the memory space, and all the content in the memory must be saved to the hard disk during sleep. Therefore, the remaining space on the hard disk must be greater than or equal to the memory capacity. Clear the disk and make enough space in the system disk.

Q: Why does my Windows XP automatically recover from the STANDBY state, but after two minutes it automatically enters the STANDBY state?

A: This is generally caused by the Network Wake-on-LAN function of the NIC. Press Win + Break to open the "System Properties" window, go to "Hardware> Device Manager", double-click to expand "network adapter", and then double-click the NIC item to open the Properties window, on the power management tab, deselect allow this device to remove the computer from the STANDBY state.

Q: Why does my Windows XP fail to recognize the USB storage device after standby recovery?

A: If you do this: Insert a USB storage device into your computer, enter the standby status, remove the storage device and insert another USB port during the standby process, and recover from the standby mode. The failure of the USB storage device cannot be identified. It's easy to solve, just plug the storage device back to the original USB port.

In addition, do not immediately insert a USB storage device when Windows XP is recovered from standby and sleep, which may cause unrecognized device problems. Instead, wait for more than five seconds.