System unable to wake-up after update

4.5

The PC goes to sleep but won't wake up; you have to pull the power to get it back.

Symptoms
  • Black screen on wake
  • Keyboard lights on but no display
  • Fans spin but no boot
Possible Causes
  • Graphics driver crash on wake
  • BIOS/UEFI bug
  • USB wake disabled

Step-by-Step Fix

1

Restart Graphics Driver

Press Win+Ctrl+Shift+B when the screen is black to force a driver refresh.

2

Disable "Link State Power Management"

In advanced power settings, set PCI Express > Link State Power Management to OFF.

3

Update BIOS

Fixes low-level hardware communication issues during the wake-up phase.

When to See a Technician

This is a classic symptom of an unstable graphics driver provided by Windows Update.

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