Power supply · critical

How to fixPSU-OVERVOLTAGE

Source overvoltage

What this error means

PSU-OVERVOLTAGE shows up as a critical-severity power supply unit (PSU) fault. The power supply supplies a higher voltage than specified. Risk of component damage. It's most often caused by faulty PSU, failure of OVP protection and poor quality source. 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
01Turn off your PC immediately

Turn off your PC immediately.

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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02Replace the PSU

Replace the PSU.

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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03Measure the voltage with a multimeter

Measure the voltage with a multimeter.

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 PSU
  • Failure of OVP protection
  • Poor quality source