ASUS Zenbook 14 OLED UX3402 Intel Core Ultra 5 125H Sleep Not Working Fix Windows 11

Q: Does ASUS Zenbook 14 OLED UX3402 use Modern Standby?

Yes. The Intel Core Ultra 5 125H uses Windows 11 Modern Standby (S0ix). This replaces traditional S3 sleep and allows the laptop to receive notifications while appearing asleep.

Q: Can a mouse or keyboard prevent sleep on ASUS Zenbook 14 OLED UX3402?

Yes. Some USB mice and keyboards send wake signals preventing sleep. In Device Manager open the device properties and uncheck Allow this device to wake the computer.

Windows 11

The ASUS Zenbook 14 OLED UX3402 does not enter sleep mode, or wakes immediately after sleeping. The Intel Core Ultra 5 125H uses Modern Standby and a background process keeping the CPU active is often the cause. The laptop stays on, draining battery and running warm overnight.

Fix 1 — Run powercfg /requests to Find the Blocker

Open PowerShell as admin and run: powercfg /requests. Any entry under SYSTEM, DISPLAY, or AWAYMODE indicates a running process is preventing sleep. Close the listed app or stop the service to allow sleep to engage.

Fix 2 — Disable Wake Timers

Search Power Options → Change plan settings → Change advanced power settings. Expand Sleep → Allow wake timers → set both On battery and Plugged in to Disable. This stops scheduled tasks and apps from waking the device.

Windows 11 powercfg requests sleep blocker ASUS Zenbook fix

Fix 3 — Disable USB Device Wake

In Device Manager, expand Human Interface Devices and USB section. For each mouse, keyboard, or hub entry, open Properties → Power Management → uncheck “Allow this device to wake the computer.”

Fix 4 — Update ASUS System Control Interface Driver

Download the ASUS System Control Interface V3 driver from ASUS Support for Zenbook 14 OLED UX3402. This driver manages power state transitions and an outdated version can cause sleep to fail on the Intel Core Ultra platform.

“Running powercfg /requests revealed my antivirus was holding a SYSTEM wake lock. Disabling real-time scan fixed the sleep issue on my Zenbook 14 OLED.” — Hasrul, Kota Kinabalu

ASUS Zenbook 14 OLED UX3402 ASUS System Control Interface driver fix Windows 11

About the Author
Ryan holds a Computer Science degree and has spent over 15 years troubleshooting Windows hardware and driver issues across major laptop brands. He writes practical, step-by-step guides for everyday users at softwaredriverdownload.com.

Frequently Asked Questions

Why does ASUS Zenbook 14 OLED UX3402 not go to sleep?

A background app or Windows service is sending activity signals that prevent Modern Standby from engaging. Common culprits are antivirus software, VPN clients, and Windows Update processes running in the background.

How do I find what is preventing sleep on ASUS Zenbook 14 OLED?

Open PowerShell as admin and run: powercfg /requests. This lists all active power requests that are preventing sleep. The output shows which app or driver is blocking the sleep transition.

Does ASUS Zenbook 14 OLED UX3402 use Modern Standby?

Yes. The Intel Core Ultra 5 125H on the UX3402 uses Windows 11 Modern Standby (S0ix). This replaces traditional S3 sleep and allows the laptop to receive notifications while appearing asleep, similar to a smartphone.

Can a mouse or keyboard prevent sleep on ASUS Zenbook 14 OLED UX3402?

Yes. Some USB mice and keyboards send wake signals that prevent sleep or immediately wake the laptop after it sleeps. In Device Manager, open the device properties and uncheck “Allow this device to wake the computer.”

Posted

September 10, 2026

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