BIOS & startup · high

How to fixCPU Vcore Out of Range

CPU Vcore Out of Range

What this error means

CPU Vcore Out of Range is a high-severity hardware BIOS/UEFI issue. The processor voltage is detected by the motherboard sensors as being outside of stable operating bounds. It's also often linked to failing power supply unit (PSU). Follow the steps below to fix it.

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
01Reset CPU core voltage settings to default/auto

Reset CPU core voltage settings to default/auto.

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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02Disable CPU Load-Line Calibration (LLC)

Disable CPU Load-Line Calibration (LLC).

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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03Test system with a known good PSU

Test system with a known good 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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Possible causes

  • Incorrect manual voltage settings in BIOS
  • Motherboard VRM degradation
  • Failing power supply unit (PSU)