Power management unable to exit low power state
4.5
The computer becomes extremely slow or "stuck" in a low-performance mode even when plugged in.
Symptoms
- CPU stuck at 0.8GHz
- Laggy UI
- Slow app opening
Possible Causes
- BD PROCHOT signal
- Failing power adapter
- Thermal throttling bug
Step-by-Step Fix
1
Unplug and Replug
Forces the OS to re-evaluate the power source and performance level.
2
Use ThrottleStop
Advanced users can use this tool to see if "BD PROCHOT" is being triggered incorrectly.
3
Check for Overheating
If the system is too hot, it will lock the CPU to the lowest speed to cool down.
When to See a Technician
A failing power adapter can cause the motherboard to throttle the CPU to save power.
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