How to Fix Thinkpad Helix Type 3701 getting stuck on IOConsoleUsers: gIOScreenLock when trying to boot to a Catalina installer

By Freirburro
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How to Fix Thinkpad Helix Type 3701 getting stuck on IOConsoleUsers: gIOScreenLock when trying to boot to a Catalina installer

This mini-guide provides a structural approach to troubleshoot and fix the issue.

Prerequisites

  • Confirm your hardware specifications (CPU, GPU, Motherboard).
  • Ensure you have a bootable recovery USB and backup your EFI.

Fix Steps

  1. Verify your network controller model (Intel, Broadcom, Realtek).
  2. Ensure the correct kext (e.g., AirportItlwm or BrcmPatchRAM) is loaded in your config.
  3. Clear network interfaces and reset NVRAM if changes don't apply.

Verification

  • Reboot and verify if the functionality is restored and stable under typical usage.

Original Question:

First time trying on this machine and I’m surprised I got this far Specs: CPU: Intel Core i5 3337U dual core @ 1.80Ghz iGPU: Intel HD Graphics 4000 4gb of Ram 256gb ssd Network card: Intel Centrino No Ethernet Realtek audio

submitted by /u/Allanrfoxd2
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