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. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Update chipset and network interface drivers

Update chipset and network interface drivers.

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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02Reset BIOS settings to system defaults

Reset BIOS settings to system defaults.

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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03Run memory diagnostics using MemTest86

Run memory diagnostics using MemTest86.

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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04Disable fast startup settings in Control Panel

Disable fast startup settings in Control Panel.

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

  • 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  • Outdated BIOS firmware configuration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 any action inside the tool before applying changes.

devmgmt.msc