What is CPU-PSTATE-ERR?
This medium-severity issue affects the processor (CPU). Processor failed to transition to a requested performance state. This usually traces back to BIOS bug and faulty power management driver. Use the steps below to track down and fix the cause.
Common Causes
- BIOS bug
- Faulty power management driver
Step-by-Step Fix Guide
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1
Update BIOS
As a first move, Update BIOS handles the most common scenario behind CPU-PSTATE-ERR.
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2
Reinstall chipset drivers
If it's still not resolved, work through the rest of the steps — they're aimed at rarer cpu instability cases.
Commands & Diagnostics
powercfg /query
Frequently Asked Questions
In most cases, BIOS bug is behind CPU-PSTATE-ERR. Faulty power management driver can trigger it too.
"Update BIOS" clears up most CPU-PSTATE-ERR reports by itself. The remaining steps above cover what's left.
CPU-PSTATE-ERR is a medium-severity issue. It can affect system stability, but the fix steps above typically resolve it without lasting damage.
Usually. CPU-PSTATE-ERR is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Not necessarily. CPU-PSTATE-ERR can be triggered by software and driver issues, overclocking instability, or BIOS misconfigurations — not just hardware failure. Run through the diagnostic steps above before concluding the processor itself is defective.
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