I’ve seen this annoying problem on several Windows 8 (or 8.1) laptops when turning off the computer: the screen goes black, but the processor (CPU) fan stays on, and on some laptops the power status and hard drive lights stay on. enabled. The only way to completely shut down the laptop during this behavior is to continuously press the power button.
To solve the above problem (fans keep running when Windows is shut down), I applied the following solutions in separate cases (on different computers) with successful results.
How to fix: Fans continue to run after Windows shuts down.
Solution 1. Enable hybrid sleep mode.
The Hybrid Sleep feature was introduced with Windows Vista and combines Sleep and Hibernate features. In simple terms, when you enable hybrid sleep, Windows writes active data to your hard drive (as in hibernation), but also uses low-level power in RAM to store active data there (as in Sleep). provides . To enable hybrid sleep mode:
1. Open Windows Control Panel. For this:
- Click on “Windows” + “RClick the ” button to download Running dialog box.
- write “control Panel” and press Enter.
2. “ChangeSee” from option “Small icon” and then click “Power options“.
3. Press “Change plan settings” in the active (selected) plan.
4. Click on “Change advanced power settings“.
5. When Power Options appears on the screen, expand Sleep Settings.
6. Expansion Allow Hybrid Sleep* option and “On the battery” and “Connectedoptions for ” On and press OK.
*Note: If the Allow Hybrid Sleep option is not available, then:
a. Enable hibernation from the command line with this command: powercfg.exe -h
b. In the BIOS, set the suspend mode to RAM (S3) mode. (See solution 2 below for how to do this).
Solution 2. Set the power mode (in BIOS) to ACPI S3 mode (RAM suspend).
1. Enter the BIOS settings and install under the Power Management menu ACPI suspend mode (or Standby mode) to “S3 (STR)”.
2. Save and exit From the bios settings and log into Windows as usual.
Note: If the ACPI S3 mode is not available in the BIOS settings, you need to update the BIOS to the latest version. However, since updating the BIOS is risky, make sure that the new BIOS version supports ACPI S3 mode before updating.
Solution 3: Disable Fast Startup (Windows 8).
try deleting the Quick launch feature. Follow the steps in this article to disable fast startup:
How to disable fast startup in Windows 8 and 8.1
Solution 4: Disconnect the wireless printers.
If you are using a Wireless printer, change the connection to the printer from WLAN to LAN (if supported by the printer). As a workaround, you can also turn off the printer before turning off your computer.
If the above solutions don’t work, try something else:
1. Disconnect all external devices (eg card reader, mouse, printer, etc.).
2. Remove all unnecessary programs that run when Windows starts. Maybe some of them prevent your system from going to sleep (for example, UTorrent, Skype, etc.). A free, easy-to-use and reliable utility for managing startup programs is CCleaner.
Detailed instructions on how to manage startup programs with CCleaner can be found here.
3. Install the latest drivers for your hardware (eg Graphics Card, Card Reader, USB, etc.).
4. If you have an HP (or other brand) laptop with variable graphics (a laptop with two graphics adapters), using the BIOS settings, Variable graphics mode setting to Completed. Detailed instructions on how to do this can be found here: Enable Switchable Graphics in BIOS Fixed Mode