How to Fix Big Sur installer shuts down computer during Apple logo
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
- Check if your GPU requires WhateverGreen or specific boot-args (e.g., agdpmod=pikera).
- Ensure Metal acceleration is fully supported for your macOS version.
- Update Lilu and WhateverGreen to the latest versions.
Verification
- Reboot and verify if the functionality is restored and stable under typical usage.
Original Question:
I’ve tried different methods of installing Big Sur but they all lead to here. Catalina works completely on this machine by the way.
When I install Big Sur off the internet the computer restarts by itself even though it doesn’t seem like it was done, but this is probably normal.
Now, when I try to boot off the installer, I see the Apple logo, then for some reason verbose mode shows me that power off was triggered. I remember seeing this could’ve been a GPU problem, and even though I didn’t need it in Catalina, I added PciRoot(0x0)/Pci(0x2,0x0) in DeviceProperties>Add.
Now I get a different problem. In less than a second the PC restarts. I attached an image for what I see.
Also i’m running HfsPlusLegacy.efi and someone who had a similar problem said it could’ve been because of the NVRAM.
HP 23-g013w Intel Pentium G3220T Intel HD Graphics // Haswell-DT GT1
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