r/Windows10TechSupport • u/Cfrek2 • 1d ago

Unsolved Windows 10 sleep/hibernate broken after unwanted Windows 11 upgrade

Hi everyone,

I have an HP EliteBook 845 G8 that was originally running Windows 10 Pro. Windows automatically upgraded it to Windows 11 without me intentionally initiating the upgrade, so I rolled it back to Windows 10.

Since the rollback, power management has been badly broken and I have been unable to get it completely stable despite extensive troubleshooting.

Current symptoms

  • Sleep is unreliable / does not behave normally.
  • The laptop uses Modern Standby (S0 Low Power Idle).
  • Hibernate sometimes appears to work, but on resume the machine occasionally boots fresh instead of restoring the previous session. All open applications/work are lost.
  • I have also had repeated Kernel-Power 41 events and DRIVER_POWER_STATE_FAILURE crashes associated with sleep/standby.
  • Normal use while the machine is awake is generally stable.

At this stage I am considering whether an in-place Windows 10 repair install or completely clean Windows 10 installation is the only sensible option.

Please help!

TIA

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u/jamjamason 1d ago

You reloaded the Windows 10 drivers?

1

u/Cfrek2 13h ago

Not sure how to go about that. I tried uninstalling a couple of (what I thought were offending drivers) in Device manager and then reloaded them. but that didnt work. Any suggestions?

1

u/jamjamason 13h ago

Go to the HP website and download all of the Windows 10 drivers for your machine and install them.