Is "Disable Modern Standby (S0)" safe to switch on?

A fix for a specific laptop problem, not a gaming tweak. Check that sleep still works after the restart. The main cost: If the firmware has no S3 sleep, the PC is left with no sleep state at all, only hibernate and shutdown.

Does it need a restart?

Yes, the change applies after a restart.

Is "Disable Modern Standby (S0)" free in Frozen Tweaks?

It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

PlatformAoAcOverride: disabling Modern Standby (S0 low power idle) on Windows

Frost LIVEPowerProUndo: YesUpdated Oct 8, 2026View as Markdown

Short answer

Updated Oct 8, 2026

Modern Standby keeps a sleeping PC partly awake so it can sync mail and updates, like a phone. PlatformAoAcOverride set to 0 tells Windows not to use it, and the PC falls back to classic S3 sleep where the firmware supports that. In the registry it sets PlatformAoAcOverride to 0 under HKLM\SYSTEM\CurrentControlSet\Control\Power.

In the app

Disable Modern Standby (S0)PRO

Registry

HKLMSYSTEM\CurrentControlSet\Control\Power

PlatformAoAcOverrideStays 00

What the switch writes. Your current value may differ.

What it does

In the app the switch is called "Disable Modern Standby (S0)", described there as: Disables S0 connected standby to prevent background wake/network during sessions (reboot).

When it helps, and when it hurts

When it helps

Laptops that wake in a bag, run hot or lose battery while 'asleep'.

When it hurts

If the firmware has no S3 sleep, the PC is left with no sleep state at all, only hibernate and shutdown.
Microsoft does not support this override, and a Windows update can ignore it.

What it writes

Exactly what the switch changes, read from the app's source. Switching it off is what the app writes when you turn the tweak off again.

Registry values the switch writes.
Key and value	With the tweak	Switching it off
HKLMSYSTEM\CurrentControlSet\Control\PowerPlatformAoAcOverride	0	Stays 0Switching it off leaves it.

From the app's source (modern_standby_off.hpp), app 2.0.0, checked Oct 8, 2026.

The same change by hand

You do not need the app for this one. These commands make the changes from the table above. Run them in a Command Prompt opened as administrator, and make a restore point first.

Make the change · CMD

reg add "HKLM\SYSTEM\CurrentControlSet\Control\Power" /v "PlatformAoAcOverride" /t REG_DWORD /d 0 /f

See what it is set to now · CMD

reg query "HKLM\SYSTEM\CurrentControlSet\Control\Power" /v "PlatformAoAcOverride"

How to undo it

In the app: Yes

Switching it off sets a standard Windows value, which may not be exactly how you had it.

Switch the tweak off in Frozen Tweaks. The values in the table are left as they are, so set them by hand if you want the old behavior.

Changing several settings at once? The app's Make a restore point button, on every plan, makes a Windows restore point before you start.

Verdict

A fix for a specific laptop problem, not a gaming tweak. Check that sleep still works after the restart.

Questions

What does the "Disable Modern Standby (S0)" tweak change in Windows?: In the registry it sets PlatformAoAcOverride to 0 under HKLM\SYSTEM\CurrentControlSet\Control\Power.
Is "Disable Modern Standby (S0)" safe to switch on?: A fix for a specific laptop problem, not a gaming tweak. Check that sleep still works after the restart. The main cost: If the firmware has no S3 sleep, the PC is left with no sleep state at all, only hibernate and shutdown.
How do I undo it?: Switch the tweak off in Frozen Tweaks. Switching it off sets a standard Windows value, which may not be exactly how you had it.
Does it need a restart?: Yes, the change applies after a restart.
Is "Disable Modern Standby (S0)" free in Frozen Tweaks?: It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

In the app