Hi Ben Carlson,
Welcome to Microsoft Q&A! And thanks for the very detailed breakdown.
I know how frustrating it is when a Surface Pro 7 becomes stuck at 0.6 GHz on battery and essentially unusable. This behavior is often caused by the Surface firmware or Intel Dynamic Tuning getting stuck in a low‑power state after upgrading to Windows 11. Although not guaranteed to work 100%, below are some solutions that have helped other SP7 users that you can try out:
1 - Fully reset the embedded controller (EC)
- Unplug everything: charger, mouse, headset, USB, and so on.
- Hold Shift > select Shut down and keep holding Shift.
- After the screen turns off, wait for at least a minute.
- Then, press the power button for 20-30 seconds:
- The Windows logo will appear, disappear, and then appear again.
- Make sure that sequence is complete > let it turn on on battery.
2 - Install all available Surface firmware updates
- Plug the charger to a wall socket, confirm energy is stable.
- Go to Settings > Windows Update > Check for updates
- Also check Advanced options > Optional updates
- Install everything under Surface, System, or Firmware
- Restart your Surface following the steps instructed above.
3 - Reset Windows power schemes
- Press Win + X > choose Terminal (Admin) to open Windows PowerShell
- Run:
powercfg -restoredefaultschemes> When it's done, restart your PC.
4 - Disable Modern Standby temporarily
- Open Windows PowerShell (Admin) as described above.
- Run the following commands one by one:
-
powercfg /h off -
reg add "HKLM\System\CurrentControlSet\Control\Power" /v PlatformAoAcOverride /t REG_DWORD /d 0 /f
-
- Restart and if performance now stabilizes, Modern Standby is the trigger.
If none of the above restores stable performance, it likely points to a hardware fault, and replacement might be the only practical option, unfortunately.
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