The issue you are experiencing with the Lenovo X1 Yoga laptops power cycling during the installation of Windows 11 could be attributed to several factors. Here are some potential causes and troubleshooting steps:
- UEFI Firmware: Ensure that the UEFI firmware is up to date. Sometimes, outdated firmware can lead to compatibility issues with newer operating systems like Windows 11.
- Boot Configuration: The power cycle loop might occur if the system is unable to locate the boot files. Since you mentioned that the EFI system partition appears intact, verify that the boot configuration is correct. You can use the
BCDBootcommand to ensure that the boot files are properly configured in the EFI partition. - Secure Boot: If Secure Boot is enabled in the UEFI settings, try disabling it temporarily to see if it resolves the issue. Secure Boot can sometimes interfere with the installation process.
- Corrupted Installation Media: If the installation media is corrupted, it may lead to incomplete installations. Ensure that the installation media created via the Windows Media Creation Tool is not corrupted.
- Hardware Compatibility: Check for any hardware compatibility issues. Ensure that all hardware components, especially drivers, are compatible with Windows 11.
- Diagnostic Tools: Utilize diagnostic tools available in the UEFI/BIOS settings to check for hardware issues. This can help determine if there are any underlying hardware problems.
- Logs and Error Messages: If possible, check for any logs or error messages that may provide insight into what is causing the power cycle. This can include checking the
SrtTrail.txtlog file if the system attempts to boot into recovery mode.
By systematically checking these areas, you should be able to identify whether the issue lies with the BIOS, the EFI partition, or another component of the system.