What is PROCHOT-SIGNAL?
Activation of PROCHOT signal (PROCHOT-SIGNAL) is a high-severity fault affecting the processor (CPU). The Processor Hot (PROCHOT) signal has been activated, which causes extreme throttling, sometimes even at low temperatures. Common triggers are defective voltage regulator (VRM) and for laptops – defective battery / sensor. Use the steps below to track down and fix the cause.
Common Causes
- Faulty temperature sensor on board
- Defective voltage regulator (VRM)
- For laptops – defective battery / sensor
Step-by-Step Fix Guide
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1
Check actual CPU and board temperatures
Check actual CPU and board temperatures tends to be the quickest win here, addressing the most typical cause of PROCHOT-SIGNAL.
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2
For laptops, try disconnecting the battery
Should the issue continue afterward, the remaining steps are there to cover the less common cpu instability scenarios.
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3
Disable BD PROCHOT (only advanced via ThrottleStop)
"Disable BD PROCHOT (only advanced via ThrottleStop)" covers a less common but documented cause of PROCHOT-SIGNAL.
Commands & Diagnostics
powercfg /batteryreport
Frequently Asked Questions
PROCHOT-SIGNAL is most often triggered by faulty temperature sensor on board. Other reports point to defective voltage regulator (VRM) and for laptops – defective battery / sensor as contributing factors.
Try "Check actual CPU and board temperatures" first — it resolves most PROCHOT-SIGNAL cases on its own. Only work through the rest of the guide above if it comes back.
PROCHOT-SIGNAL is a high-severity error. It won't damage your PC instantly, but repeated occurrences usually point to a deeper problem worth addressing soon.
You shouldn't need to. Work through the guide above first — a reinstall is only worth considering if none of those steps help.
Not necessarily. PROCHOT-SIGNAL 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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