PC fails to wake from sleep (S3/Modern Standby)

What is SLEEP-WAKE-FAIL?

The computer appears to enter sleep/standby but cannot wake up. Requires hard reset.

Common Causes

• Driver not supporting S3 wake correctly (common for USB and GPU drivers)
• Modern Standby (S0ix) conflict with older hardware
• BIOS setting disabling wake-on-USB

Step-by-Step Fix Guide

• 1
  Update GPU and network/Wi-Fi drivers
• 2
  Disable Modern Standby if supported: powercfg /a
• 3
  Enable USB wake support in BIOS → USB Wake Support

Commands & Diagnostics