If you want, I can generate an example BMP file specification or give commands tailored to your OS and tools to create or validate the file. Which platform are you using (Windows, macOS, Linux)?
Lenovo offers an official, albeit complex, way to change the boot logo using its BIOS update utility. This method is the safest as it uses manufacturer-provided tools.
: Typically logo.bmp for BIOS tools, or OEMLogo.bmp for Windows System Properties. Use Case 1: Windows System Properties Customization lenovo oem logo bmp 120x120
For Lenovo users, a more modern and accessible method involves third-party tools that leverage Lenovo’s support for user customization via UEFI variables.
Even at 120x120, if the file size exceeds the specific byte budget allocated by that specific Lenovo motherboard model, it will fail. Ensure there are no extra alpha channels or embedded color profiles hidden in the file properties. If you want, I can generate an example
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation Use code with caution.
Move your 120x120 BMP file to the Windows System32 directory: C:\Windows\System32\OEMLogo.bmp Use code with caution. Step 2: Edit the Registry Press Win + R , type regedit , and hit . Navigate to the following path: This method is the safest as it uses
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation] "Logo"="C:\\Windows\\System32\\OEMLogo.bmp" "Manufacturer"="Lenovo" "Model"="ThinkPad PC" Use code with caution.
If you have reinstalled Windows and lost your "Lenovo" branding in the or System section, you can manually restore it using the Windows Registry Editor . 1. Prepare Your Logo File
This paper examines the technical and practical considerations for creating and using a 120×120 BMP image of the Lenovo OEM logo. It covers image format selection, pixel-level constraints, color and palette management for BMP files, scaling and anti-aliasing techniques, branding and legal usage guidelines, and optimization for embedded systems and firmware. Recommendations and a sample workflow are provided to produce a high-quality 120×120 BMP suitable for OEM deployment.
Follow the on-screen prompts to reboot your computer. The BIOS will flash, and your custom 120x120 logo will be written to the EEPROM.