How to Keep RGB On When PC Is Off (2026 Complete Guide)

Keeping RGB lighting on when your PC is off is a popular customization request among PC enthusiasts who want their system to look great even when it is not in use. Whether you want your gaming setup to serve as ambient lighting in your room, maintain a consistent aesthetic while the PC is powered down, or simply enjoy the visual appeal of RGB lighting around the clock, there are several methods to achieve this. The approach you take depends on your motherboard brand, the type of RGB components you have, and whether you want the lights to stay on indefinitely or follow a specific schedule. In this comprehensive guide, we will walk you through every method for keeping RGB lights on when your PC is turned off, including BIOS settings, software configuration, hardware solutions, and workarounds for different RGB ecosystems.

Last updated: July 19, 2026 | Estimated reading time: 11 minutes

Table of Contents

• How RGB Lighting Works When PC Is Off
• Why RGB Turns Off When PC Is Off
• Keeping RGB On with ASUS Motherboards (Aura Sync)
• Keeping RGB On with MSI Motherboards (Mystic Light)
• Keeping RGB On with Gigabyte Motherboards (RGB Fusion)
• Keeping RGB On with ASRock Motherboards (Polychrome)
• Software-Based Methods
• Hardware-Based Methods
• Using USB Power for Always-On RGB
• Power Consumption and Safety Considerations
• Frequently Asked Questions

How RGB Lighting Works When PC Is Off

To understand how to keep RGB lighting on when your PC is off, you first need to understand how RGB lighting draws power. Most RGB components, including LED strips, fans, RAM modules, and GPU lighting, receive power through one of two methods: direct power from a motherboard header or power from the PSU through the motherboard’s standby power circuit.

When your PC is powered on, the PSU provides full power to all components, including the 5V or 12V power rails that supply RGB lighting. However, when you shut down your PC, the PSU enters standby mode, which provides only a small amount of power (typically 5V at a low amperage) through the +5VSB (standby) rail. This standby power is what allows features like Wake-on-LAN and USB charging to work while the PC is off.

The key to keeping RGB on when the PC is off is leveraging this standby power. Some motherboards and RGB controllers are designed to continue providing power to RGB headers even in standby mode, while others cut power to these headers entirely. The behavior depends on the motherboard manufacturer, BIOS settings, and the specific RGB implementation.

For RGB components connected directly to the PSU (such as some LED strips with SATA power connectors), the standby power behavior depends on the PSU’s +5VSB rail capacity and whether the component is designed to operate in standby mode.

Why RGB Turns Off When PC Is Off

RGB lighting typically turns off when the PC is powered down for several reasons:

Power Cutoff: When you shut down your PC, the motherboard cuts power to most of its headers, including RGB headers. This is the default behavior to conserve energy and is implemented at the hardware level by the motherboard’s power management circuitry.

Software Control: RGB control software like ASUS Aura Sync, MSI Mystic Light, or Gigabyte RGB Fusion manages the lighting through the operating system. When the OS shuts down, the software stops controlling the lights, and the default behavior (usually off) takes over.

BIOS Settings: Many motherboards have BIOS settings that control RGB behavior during standby. These settings may be labeled as “ErP Ready,” “EuP 2013,” “Deep Sleep,” or “Standby LED” and are designed to minimize power consumption when the PC is off.

Component Design: Some RGB components, particularly budget LED strips, are designed to turn off when the control signal from the motherboard stops. They do not have the capability to maintain their last lighting state without active control.

Understanding these reasons helps you identify which method will work best for your specific setup. If the issue is a BIOS setting, changing that setting may be all you need. If it is a software issue, a different approach may be required.

Keeping RGB On with ASUS Motherboards (Aura Sync)

ASUS motherboards with Aura Sync have a specific BIOS setting that controls RGB behavior during standby. Here is how to enable it:

Step 1: Enter your BIOS by pressing Delete during startup.

Step 2: Navigate to the Advanced tab and look for the APM Configuration submenu.

Step 3: Find the “ErP Ready” setting. This setting controls whether the motherboard reduces standby power to comply with EU energy regulations. When ErP is enabled (set to Enabled or Ready), the motherboard cuts standby power to USB ports, RGB headers, and other peripherals, which turns off RGB lighting when the PC is off.

Step 4: Set ErP Ready to Disabled. This allows the motherboard to provide standby power to RGB headers and USB ports even when the PC is off.

Step 5: Save changes and exit the BIOS. Your RGB lighting should now remain on when the PC is shut down.

After disabling ErP, you may need to configure the RGB behavior in ASUS Armoury Crate software. Open Armoury Crate, navigate to the Aura Sync section, and look for an option like “When system is in sleep, hibernate or shut down” and set it to “保持目前的灯光效果” (Keep current lighting effect) or “Always On.”

Note that some newer ASUS boards with BIOS versions from 2025 or later may have renamed or reorganized these settings. If you cannot find the ErP setting, try looking under the Boot tab or use the BIOS search function (Ctrl + F).

Keeping RGB On with MSI Motherboards (Mystic Light)

MSI motherboards use the Mystic Light software for RGB control and have their own approach to standby RGB behavior:

Step 1: Enter the BIOS by pressing Delete during startup.

Step 2: Navigate to the Settings > Advanced > Power Management submenu.

Step 3: Look for “ErP Ready” or “EuP 2013 Ready” setting. Disable this option to allow standby power to RGB headers and USB ports.

Step 4: Some MSI boards also have a “Deep Sleep” setting under the Advanced tab. Set this to “Disabled in S4+S5” to prevent the system from entering deep sleep states that cut power to RGB headers.

Step 5: Save and exit the BIOS.

Step 6: Open the MSI Center or Mystic Light application in Windows. Navigate to the RGB settings and look for an option related to shutdown behavior. Set it to maintain the current lighting state when the system is off.

MSI boards from the MAG and MPG series typically have better support for always-on RGB compared to budget models. If your MSI board does not support standby RGB through BIOS settings, you may need to use one of the hardware methods described later in this guide.

Keeping RGB On with Gigabyte Motherboards (RGB Fusion)

Gigabyte motherboards with RGB Fusion 2.0 have the following settings for standby RGB:

Step 1: Enter the BIOS by pressing Delete during startup.

Step 2: Navigate to the Peripherals tab or the Settings > Miscellaneous submenu.

Step 3: Look for “ErP” or “EuP” settings. Disable ErP to allow standby power to flow to RGB headers and USB ports.

Step 4: Some Gigabyte boards have a dedicated “RGB LED in Sleep/Hibernate/Soft Off” setting under the Peripherals tab. Enable this option.

Step 5: Save and exit the BIOS.

Step 6: Open RGB Fusion 2.0 software and look for the shutdown behavior setting. Configure it to keep the current lighting pattern when the system is off.

Gigabyte’s RGB Fusion 2.0 software has improved over the years but can still be finicky. If the software-based approach does not work, the BIOS settings should be sufficient to keep RGB on during standby. For detailed installation of RGB Fusion, check out our guide on how to install RGB Fusion 2.0.

Keeping RGB On with ASRock Motherboards (Polychrome)

ASRock motherboards use the Polychrome Sync software for RGB control and have BIOS settings similar to other manufacturers:

Step 1: Enter the BIOS by pressing Delete during startup.

Step 2: Navigate to the Advanced tab and look for the APM Configuration submenu.

Step 3: Find and disable the “ErP Ready” setting to allow standby power to RGB headers.

Step 4: Some ASRock boards have a separate “SB LED” or “Standby LED” setting that controls whether the motherboard’s onboard LEDs stay on in standby. Enable this if available.

Step 5: Save and exit the BIOS.

Step 6: Open the ASRock Polychrome Sync software and configure the shutdown lighting behavior to maintain the current effect.

ASRock has been consistent in providing standby RGB settings across their product line. Budget ASRock boards may have fewer options compared to their premium offerings, but the ErP disable method works universally.

Software-Based Methods

If your motherboard does not have BIOS-level support for always-on RGB, or if you want more control over the lighting behavior, software-based methods can help:

OpenRGB: OpenRGB is an open-source RGB control tool that works with virtually all RGB hardware. While it cannot keep lights on after the OS shuts down (since the OS is not running), it can set the last known state that some hardware controllers will maintain. Download OpenRGB, configure your desired lighting, and some controllers will remember the setting.

SignalRGB: SignalRGB is another comprehensive RGB control tool that offers advanced features including scheduling. While it cannot directly control RGB when the PC is off, it can integrate with smart home systems to trigger lighting changes based on PC power state.

Third-Party Controllers: Devices like the Corsair Lighting Node Pro, Razer Chroma Connect, or NZXT Hue 2 have their own microcontrollers that can maintain lighting states independently of the PC. Connect your RGB strips or fans to these controllers, set the desired lighting, and the controller will maintain the state even when the PC is off, provided it has standby power.

Hardware-Based Methods

When software and BIOS methods are insufficient, hardware solutions provide the most reliable always-on RGB:

Direct PSU Connection: Some RGB LED strips can be connected directly to the PSU using a SATA or Molex power connector. When connected this way, they receive power directly from the PSU’s +12V or +5V rail. If the PSU provides standby power on this rail (which most modern PSUs do for SATA power), the LEDs will stay on when the PC is off. Check if your PSU’s SATA power connectors remain active in standby mode.

Separate LED Controllers: Purchase a standalone RGB controller that has its own power supply or battery. These controllers operate independently of the PC and can maintain lighting states indefinitely. They are particularly useful for case lighting, desk lighting, or ambient room lighting.

Smart LED Strips: Wi-Fi or Bluetooth-enabled LED strips like Philips Hue, Govee, or LIFX can be controlled through smartphone apps and operate independently of the PC. These strips connect to your home Wi-Fi network and can be set to any color or pattern at any time, including when the PC is off.

Using USB Power for Always-On RGB

Some RGB devices, particularly small LED strips and accessories, can be powered through USB ports. When ErP is disabled in the BIOS, USB ports receive standby power even when the PC is off, which can keep USB-powered RGB devices illuminated.

To use this method:

Step 1: Disable ErP in your BIOS (as described for your motherboard brand above).

Step 2: Connect your USB-powered RGB device to a USB port on the back panel of your motherboard (rear I/O ports, not front panel ports).

Step 3: The USB port should now provide 5V standby power to the RGB device, keeping it on when the PC is off.

Be aware that the +5VSB rail on most PSUs provides limited current (typically 2-3 amps). Excessive power draw from USB devices in standby could potentially overload this rail. Keep the total USB power draw in standby to under 10 watts to be safe.

Power Consumption and Safety Considerations

Keeping RGB lighting on when your PC is off does consume electricity, though the amount is typically small. Here are the power consumption figures to consider:

RGB Component	Typical Power Draw	Monthly Cost (at $0.12/kWh)
Single RGB Fan	1-3W	$0.10-$0.26
RGB RAM Module (per stick)	2-5W	$0.17-$0.43
1m RGB LED Strip	5-10W	$0.43-$0.86
Full Case RGB (fans + strips)	10-25W	$0.86-$2.16
GPU RGB Lighting	5-15W	$0.43-$1.29

Safety-wise, keeping RGB on is perfectly safe as long as you are not exceeding the power capacity of the standby rail. Modern PSUs have overcurrent protection on the +5VSB rail, so even if you draw too much power, the PSU will simply shut off rather than causing damage. However, it is good practice to keep standby power draw reasonable to avoid unnecessary electricity costs and heat generation.

For information on managing your RGB ecosystem, you might find our guide on how to change G.Skill RAM color helpful if you have G.Skill RGB memory modules. Also, if you are curious about whether RGB lighting impacts system performance, read our article on does RGB affect performance.

Frequently Asked Questions

Keeping your RGB lighting on when your PC is off is achievable through a combination of BIOS settings, software configuration, and hardware solutions. The most common approach is disabling ErP in your BIOS and configuring your RGB software to maintain the lighting state during shutdown. For more advanced setups, standalone RGB controllers and smart LED strips offer the most flexibility and reliability. Whatever method you choose, the power consumption is minimal and the visual impact is significant.