Windows & BSOD · critical

How to fix0x0000003D

INTERRUPT_EXCEPTION_NOT_HANDLED (0x3D)

What this error means

0x0000003D is a critical-severity Windows operating system problem. A hardware interrupt was generated, but the kernel interrupt handler threw an unhandled exception. Commonly caused by driver memory violations, faulty motherboard chipset wiring, or BIOS settings. This can also stem from corrupted device drivers (typically network or USB controllers). Use the steps below to track down and fix the cause.

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 4 complete
01Update chipset and network interface drivers
  1. Update chipset and network interface drivers
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Reset BIOS settings to system defaults
  1. Reset BIOS settings to system defaults
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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03Run memory diagnostics using MemTest86
  1. Run memory diagnostics using MemTest86
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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04Disable fast startup settings in Control Panel
  1. Disable fast startup settings in Control Panel
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Corrupted device drivers (typically network or USB controllers)
  • Unstable memory controller or RAM voltages
  • Motherboard chipset hardware communication issues
  • Outdated BIOS firmware configuration

Useful Windows tools

These commands open Windows tools. Review changes before applying them.

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