Processor · critical

How to fixL1-CACHE-ERROR

CPU Memory L1 Cache Error

What this error means

CPU Memory L1 Cache Error (L1-CACHE-ERROR) is a critical-severity fault affecting the processor (CPU). The processor's internal L1 cache reported an unrecoverable data error. Extreme system instability. This usually traces back to too aggressive overclocking and overvoltage and manufacturing defect. See the troubleshooting steps below for the fix.

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
01Cancel any overclocking

Cancel any overclocking.

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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02Reduce voltage to safe values ​​

Reduce voltage to safe values ​​.

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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03Replace the processor (often unrepairable)

Replace the processor (often unrepairable).

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

  • Processor degradation (age, electromigration)
  • Too aggressive overclocking and overvoltage
  • Manufacturing defect