![]() ![]() In the case of secure laptops running Full Drive Encryption (FDE), this suspended memory includes the DEK (Data Encryption Key) or with Self-Encrypting Drives (SED), the very credentials required to unlock the drive. As a result, when S3’s engaged, the laptop’s drive and other hardware power off, but its memory remains active, ready to spring back to life as soon as the user opens the lid back up or hits the power button. This is because sleep mode (S3) on most laptops is little more than a low power mode designed to save battery life. But what we don’t realise is that simply shutting the lid and putting the laptop into sleep mode can leave it much more vulnerable to cyber-attacks than we might think. From the Category view, click “System and Security.For many of us, shutting our laptops after a tough day in the office is a satisfying feeling that signals the end of work until tomorrow. By default, the Control Panel settings are grouped by Category. There are different ways of viewing and accessing the tools in the Control Panel. To reenable it, open the Start Menu, search “ Turn Windows Features On and Off,” then make sure you untick both “Windows Virtual Platform” and “Windows Hypervisor Platform.” Restart your PC, and it should be possible to enable hybrid sleep mode. The virtual machine hypervisor disables it completely. Note: If you use Windows Subsystem for Linux (WSL), you will not be able to enable hybrid sleep at all. Click the Start Button, then enter “Control Panel” in the search box. To enable or disable the Hybrid Sleep Option, you must use the Control Panel. How to Enable and Disable the Hybrid Sleep Option Refer to your computer’s documentation or the manufacturer’s website for information about waking it from a power-saving state. You might need to press a key on the keyboard, click a mouse button, or lift the laptop’s lid. Most computers can be woken up by pressing the power button. ![]() How to Wake Your Computer from Sleep or Hibernation Luckily, you can re-enable hibernation with a few clicks. If you don’t see the Hibernate option in Windows 10 or Windows 11 it’s because it’s hidden by default.For more information, see your computer’s documentation or check the website for your computer’s manufacturer. Instructions for accessing BIOS generally displays on the screen as the computer boots. The key for accessing BIOS differs for each computer manufacturer. To turn on these modes, restart your computer and then enter the BIOS setup program. The power-saving modes in Windows are turned on and off in your computer’s BIOS (basic input/output system).If you don’t have administrative access on the computer, you may have to refer to the administrator to change the option. ![]() Refer to the documentation for your video card. Your video card may not support Sleep mode.When power resumes, Windows can restore your work from the hard disk if the memory is not accessible. Hybrid Sleep mode is useful for desktop computers in case of a power outage. When enabled, it automatically puts your computer into Hybrid Sleep mode when you put it into Sleep mode. The Hybrid Sleep mode is enabled by default in Windows on desktop computers and disabled on laptops. It puts any open documents and applications in memory and on your hard disk, and then puts your computer into a low-power state, allowing you to quickly wake the computer and resume your work. Hybrid Sleep mode is a combination of the Sleep and Hibernate modes meant for desktop computers. RELATED: How to Make Windows Hibernate More Often (Instead of Sleep) What Is Hybrid Sleep? Use hibernate mode if you won’t be using your laptop for an extended period of time, and you don’t want to close your documents. Modern SSDs - especially PCIe NVMe SSDs - are blazing fast, and it really shows when you’re using hibernate. Sleep mode used to be much faster than hibernation, since hibernation was limited by the speed of a mechanical hard disk. It just takes a bit longer to resume than sleep mode does. ![]() Once the computer is powered back on, it will resume everything where you left off. This allows your computer to turn off entirely, which means once your computer is in hibernate mode, it uses zero power. Hibernate mode is very similar to sleep, but instead of saving your open documents and running applications to your RAM, it saves them to your drive. RELATED: PSA: Don't Shut Down Your Computer, Just Use Sleep (or Hibernation) The computer doesn’t use much power in Sleep mode, but it does use some. Sleep mode is useful if you want to stop working for a short period of time. ![]()
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