Fix: Ensure the file is exactly oemlogo.bmp (not oemlogo.bmp.bmp ). In File Explorer, make sure "File name extensions" is checked.
Do you have a different size requirement for a different brand? Let me know in the comments below. lenovo oem logo bmp 120x120
The technical requirements for a Lenovo OEM boot logo are strict. To ensure compatibility with the UEFI firmware and Windows bootloader, the image must be a standard BMP (Bitmap) format. Specifically, it should be a 24-bit or 32-bit depth file. While 120x120 pixels is the legacy standard for small-scale branding, modern high-resolution displays sometimes scale this image, making pixel-perfect dimensions critical to avoid blurring or distortion during the handoff from BIOS to the Windows loading circle. Fix: Ensure the file is exactly oemlogo
Disclaimer: Modifying system files requires administrator privileges. Always back up your data before making system changes. Let me know in the comments below