Oem Logo Bmp 120x120 Patched: Lenovo

Understanding the "Lenovo OEM Logo BMP 120x120 Patched"

The search query "Lenovo OEM logo BMP 120x120 patched" refers to a specific technical process used by IT professionals and computer enthusiasts to customize the boot screen (splash screen) on Lenovo computers. This process involves modifying the BIOS or UEFI firmware to display a custom image—typically a company logo—instead of the standard Lenovo branding when the computer is turned on.

Here is a breakdown of the technical components involved: lenovo oem logo bmp 120x120 patched

Step 3: Apply the Patch to the BIOS File

  1. Download your laptop’s exact BIOS update .exe or .rom from Lenovo Support.
  2. Extract the BIOS capsule (use tools like BIOS_Extract or InnoExtract).
  3. Locate the boot logo module (often named LOGO, OEMLOGO, or SPLASH).
  4. Run the patched logo injector. It will:
    • Replace the stock BMP with your 120x120 BMP.
    • Recalculate checksums or remove signature checks.
    • Generate a new, modified BIOS file.

Using GIMP (free)

  1. Create new image: 120×120
  2. Design your logo (black background recommended for Lenovo)
  3. Image → Mode → RGB (not indexed)
  4. File → Export As → logo.bmp
  5. In export dialog:
    • ✅ Uncheck "Do not write color space information"
    • Select 24-bit (not RLE compression)

Using Photoshop

  1. New file: 120×120 px, RGB mode
  2. Design logo (use Lenovo red/blue/white colors: #E2231A, #1E90FF)
  3. File → Save As → BMP
  4. In BMP options: 24-bit / Windows format / No compression

Part 3: The Exact Specifications for Your Lenovo OEM Logo BMP

If you are attempting this modification, your image file must be absolutely perfect. The BIOS has zero tolerance for error. Here are the precise specifications verified across multiple Lenovo series (ThinkPad Edge, G570, Z580, K450): Understanding the "Lenovo OEM Logo BMP 120x120 Patched"

| Parameter | Requirement | | :--- | :--- | | Dimensions | 120 x 120 pixels (square) | | DPI | 72 (default, but ignored by BIOS) | | Bit Depth | 24-bit (16.7 million colors) OR 8-bit (256 colors) | | Compression | None (uncompressed) | | File Header | Standard BITMAPINFOHEADER (40 bytes) | | Orientation | Bottom-up (default BMP format) | | File Name | Usually LOGO.BMP, Lenovo.bmp, or OEMLOGO.bmp (case-sensitive on some BIOS versions) | | Background | Solid black (#000000) is recommended to blend with POST screen borders | Download your laptop’s exact BIOS update

Failure 1: "Image Invalid" Error in UEFITool

Cause: Your BMP uses a non-standard header (e.g., BITMAPV4HEADER). Fix: Open in Paint, resave as "24-bit BMP," or use ImageMagick: convert input.png -colorspace sRGB -depth 24 -compress none BMP3:output.bmp

What is an OEM Logo?

An Original Equipment Manufacturer (OEM) logo is the image displayed during the Power-On Self-Test (POST). On Lenovo systems (ThinkPad, IdeaPad, Legion, ThinkCentre), this is typically a static bitmap embedded within the UEFI/BIOS firmware.

The "Brick" Factor

Flashing a patched BIOS is the single most dangerous software modification for a PC. If the patched logo causes a validation error during boot, the system may hang indefinitely with a black screen.