Gina Johnson
If you're having trouble with your PC not waking up from sleep mode, there are several factors that could be causing this issue. This issue is often related to power options, USB or registry settings, outdated drivers, or pending Windows updates. In some cases, the Allow this device to wake the computer option may be greyed out, which can be due to technical issues, bugs, or conflicts with third-party apps. To resolve this, you can try adjusting registry value settings, running the Hardware and Device troubleshooter, or checking your Bluetooth settings.
Characteristics and Values related to "When PC wakes up from sleep grayed out"
| Characteristics | Values |
|---|---|
| Operating System | Windows 10/11 |
| Possible Causes | Misconfigured power or network settings, outdated network, mice, or keyboard drivers, pending Windows updates, technical issues or bugs, third-party apps running in the background |
| Solutions | Adjust Registry value settings, update "Network Adapters" drivers, install pending Windows updates, tweak NIC settings, add the registry value, run Hardware and Device troubleshooter, check Bluetooth settings |
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What You'll Learn
Update network adapter drivers and install pending Windows updates
Updating your network adapter drivers and installing pending Windows updates can help resolve issues with your PC waking up from sleep mode. Here's a detailed guide to walk you through the process:
Update Network Adapter Drivers
Outdated or incorrect network adapter drivers can cause issues with your PC's sleep settings. To update your network adapter drivers, follow these steps:
- Open Device Manager: Right-click on the Start menu and choose Device Manager to open it.
- Locate the Network Adapter: In the Device Manager, expand the Network adapters category to view the list of installed network adapters.
- Identify the Adapter to Update: Right-click on the specific network adapter you want to update. Common adapters include Intel, Realtek, or Killer Ethernet adapters.
- Choose "Update Driver": After right-clicking on the adapter, select Update Driver or Update Driver Software.
- Search Automatically for Drivers: Choose the option to search automatically for updated driver software. Windows will then search for, download, and install the latest driver for your network adapter.
- Restart Your PC: Once the driver update is complete, restart your computer for the changes to take effect.
Install Pending Windows Updates
Pending Windows updates can also impact your PC's sleep settings. To install pending updates, follow these steps:
- Open Windows Settings: Press the Start button and select the Settings gear icon, or press Windows + I on your keyboard.
- Go to "Windows Update": In the Settings app, navigate to the "Windows Update" section.
- Check for Updates: Click on the "Check for Updates" button to see if there are any pending updates available for your system.
- Install Available Updates: If there are any updates available, click on the "Download and Install" option to begin the installation process.
- Restart Your PC: Once the updates are installed, restart your computer to ensure that all updates take effect.
By following these steps to update your network adapter drivers and install pending Windows updates, you can help resolve issues with your PC waking up from sleep mode unintentionally. Remember to restart your computer after each update to ensure optimal performance and compatibility.
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Check for technical issues or bugs
If you are unable to wake your computer from sleep mode, there are several factors that could be causing this issue.
First, it is important to check for any technical issues or bugs in your PC. A quick way to do this is to run the Hardware and Device troubleshooter, which can help identify and fix any problems. Outdated or misconfigured drivers, especially for network adapters, can often cause issues with sleep mode. It is recommended to update your "Network Adapters" drivers in the Device Manager and install any pending Windows updates.
Additionally, there might be conflicts caused by third-party apps running in the background. Unnecessary or "ghosted" USB connections can interfere with network connectivity, so disabling these connections through the Device Manager may help resolve the issue.
Another potential cause could be your power settings. It is worth checking your power options and ensuring that wake timers are disabled. You can do this by going to Control Panel > System and Security > Power Options, choosing a balanced plan, and changing the plan settings. In the advanced power settings, disable all wake timers for both battery and plugged-in options.
If you are using a Bluetooth device, such as a mouse or keyboard, to wake your computer, ensure that the "Allow Bluetooth devices to find this PC" option is enabled in your Bluetooth settings.
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Adjust registry value settings
If you are facing issues with your PC not waking up from sleep mode, there are a few adjustments you can make to the registry value settings to resolve this.
Firstly, ensure your PC has the "Wireless Display" feature installed. If it's still not working, update the "Network Adapters" drivers in the Device Manager and install any pending Windows updates.
Now, to adjust the registry value settings, follow these steps:
- Click Start and search for "Registry Editor." Open it.
- Navigate to the following location: Computer > HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Services > BTHPORT > Parameters.
- Right-click on any blank space and select New > DWORD (32-bit) Value.
- Add "SystemRemoteWakeSupported" with a DWORD value of 1.
- Restart your PC.
Additionally, you can check if your system is InstantGo compatible by opening the Command Prompt as an administrator and typing the following command:
> powercfg /a
If the output mentions "Standby (Connected)," your system supports InstantGo, and you can enable it using the Registry Editor.
Open the Registry Editor and navigate to:
> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power
Here, on the right pane, locate the CsEnabled value. If you don't see it, your system does not support InstantGo.
By following these steps, you can adjust the registry value settings to help resolve issues with your PC not waking up from sleep mode.
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Tweak NIC settings
If your PC wakes up from sleep mode, you can try disabling the 'Allow wake timers' option. This can be done by going to Control Panel > System and Security > Power Options, choosing a balanced plan, and changing the plan settings. In the advanced power settings popup, click on the Sleep option, then uncheck 'Allow wake timers' for both battery and plugged in.
Another potential fix is to check if your Ethernet controller has wake permissions and disable it if necessary. To do this, go to Device Manager, right-click on the Ethernet controller, and check if it has wake permissions.
Now, for tweaking NIC settings for optimal performance:
- Update Network Adapter Drivers: Keeping your network adapter drivers up to date is crucial for optimal performance. Check your computer manufacturer's website for the latest network drivers, or identify the adapter manufacturer and model number to download and install the most current driver.
- Energy-Efficient Ethernet (EEE): EEE is designed to reduce power consumption during low network activity. Disabling EEE can improve performance by preventing the Ethernet adapter from entering a low-power state when there is no network activity. Go to Device Manager, select the Ethernet adapter, right-click, choose "Properties," then go to the "Advanced" tab, and disable EEE.
- Jumbo Frames: Enabling Jumbo Frames increases the size of data packets, reducing overhead and enhancing data transmission efficiency. To enable Jumbo Frames, go to Device Manager, select the Ethernet adapter, right-click, choose "Properties," then go to the "Advanced" tab, select "Jumbo Packet," and set the value accordingly.
- Interrupt Moderation Rate, Flow Control, and Offload TCP Segmentation: Disabling these settings can lower latency and enhance efficiency. However, it's advisable to research these settings before making changes as they may impact certain connections.
- Transmit and Receive Descriptors and Buffers: Increasing these values can improve the performance of outgoing and incoming network traffic, respectively. However, on PCs with limited physical memory, increasing receive buffers may negatively impact system memory.
- Receive Side Scaling (RSS): Enabling RSS distributes data processing across multiple CPU cores, resulting in enhanced performance for multi-processor systems.
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Check Bluetooth settings
If you're having trouble with the "Allow this device to wake the computer" option being greyed out, there are a few things you can try to fix the issue. Here are some steps you can take to check and adjust your Bluetooth settings:
- Enable Bluetooth: First, make sure Bluetooth is turned on. You can do this by going to your device's settings and enabling Bluetooth.
- Make your device discoverable: To do this, go to your Bluetooth settings and select "More Bluetooth options." Check the box that says "Allow Bluetooth devices to find this PC." This will make your computer discoverable to other Bluetooth-enabled devices.
- Check for updates: Ensure that your device's operating system, network adapters, and drivers are all up to date. Outdated software can sometimes cause issues with Bluetooth connectivity and device wake-up functions.
- Adjust registry value settings: This can be done by opening the "Registry Editor" and navigating to the following path: Computer > HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Services > BTHPORT > Parameters. Here, create a new DWORD (32-bit) Value and name it "SystemRemoteWakeSupported," with a DWORD value of 1.
- Disable unnecessary USB connections: Sometimes, "ghosted" or unused USB connections can interfere with your PC's network connectivity. Open the "Device Manager," click on "View" in the top bar, and disable any unnecessary USB connections.
- Tweak NIC settings: Go to the "Device Manager" and expand the "Network Adapters" section. Find and double-click on "NIC" to open its Properties. Click on the "Advanced" tab and navigate to "UDP Checksum Offload (IPv4)." Select the "RX and TX enabled" option. Then, scroll down and enable the following options: "Shutdown Wake-On-Lan," "Wake on Magic Packet," and "Wake on pattern match." Finally, set the "WOL & Shutdown link speed" to 10Mbps and click OK.
- Use a remote desktop software: If you want to remotely control a waking computer, you can use a free remote desktop software like AnyViewer. This will allow you to access your computer's screen, control it remotely, and transfer files.
By following these steps and checking your Bluetooth settings, you may be able to resolve the issue of the "Allow this device to wake the computer" option being greyed out.
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Frequently asked questions
If your computer is not waking up from sleep mode, factors like misconfigured power or network settings, outdated network, mice, or keyboard drivers, and pending Windows updates are often the main culprits.
There are a few solutions to this issue. One is to add the registry value. Another is to run the Hardware and Device troubleshooter. A third option is to check your Bluetooth settings.
One way to resolve this issue is to adjust the Registry value settings. Another is to tweak the NIC settings.
