What if Windows 7 can't "sleep" properly?

Q: My notebook is ASUS K50AB. After upgrading from XP to Windows 7, the notebook can't use the “sleep” function. After using the sleep function, it can wake up, but the screen is black and you can't see it. This is still the case after reinstalling the system. How to solve this problem? Thank you!
A: Some motherboards need to enable sleep support in the BIOS, you can see if there is a call in the "Device Manager" system “ACPI-Compliant System” option, otherwise it is not a prerequisite for sleep, need to be turned on in the BIOS.
In addition, you must ensure that all current hardware compatible Windows 7 drivers, such as wireless network card drivers, Bluetooth drivers, etc., are properly installed. If you are not using the system, turn off the unconnected Bluetooth, unconnected wireless network, etc. Match and open hardware.
Expand “Computer & rdquo;→“Manage ”→“Device Manager”, then right click on the NIC and other devices, click “Properties","Allow this device to wake the computer&rdquo The front hook is removed, and the power management status is checked through the PowerCFG command line (“start”→“program”→“accessory”→“command prompt”→type“ Powercfg -a”).