Processor · high

How to fixPROCHOT-SIGNAL

Activation of PROCHOT signal

What this error means

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.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Check actual CPU and board temperatures

Check actual CPU and board temperatures.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02For laptops, try disconnecting the battery

For laptops, try disconnecting the battery.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Disable BD PROCHOT (only advanced via ThrottleStop)

Disable BD PROCHOT (only advanced via ThrottleStop).

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Faulty temperature sensor on board
  • Defective voltage regulator (VRM)
  • For laptops – defective battery / sensor