LG Gram 15Z990-T.AP77P (Core i7 8th Generation Freezes at LG Logo Screen) while upgrading from Windows 10 to Windows 11/Clean Installation of Windows 11 from Bootable USB

Muhammad Ibrahim 0 Reputation points
2026-06-30T10:11:41.1066667+00:00

My Laptop LG Gram 15Z990 (Core i7 8th Generation) freezes at LG Logo when upgrading from Windows 10 to Windows or Clean installing Windows 11. Checked through Microsoft PC Health Check and the system meets all the requirements i.e TPM 2.0, Secure Boot Enabled, RAM 8 GB DDR 4, 256 GB NVMe Card, Intel Core i 7 8th Generation and also Tried all the following but none worked:

  1. Created ISO from Microsoft Media Creation Tool, but didn't work.
  2. Downloaded ISO From Official Microsoft Website and create a Bootable USB, but freezes at LG Boot Logo.

Tried all other tricks available on internet but nothing works. It is also worth mentioning that even System Startup Repair doesn't work and freezes at LG Boot Logo. I think something is off with BIOS and doesn't let Windows 11 Installer to properly communicate with BIOS. Please Help

Windows for home | Windows 11 | Install and upgrade
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  1. DaveM121 897.5K Reputation points Independent Advisor
    2026-06-30T10:45:51.0333333+00:00

    1

    Boot your system into BIOS, find the security settings,

    If CSM support is enabled in there, disable that setting.

    Save that setting then restart your system and try reinstalling Windows 11again.

    2

    If that does not resolve the problem.

    The best option would be to go to the support site for your laptop on the LG website to check for any BIOS update that may be available and not yet installed.

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