How to Change Windows 11 Boot Logo to “Microslop”

TL;DR

• Replace the boring, corporate Windows 11 flag with the “Microslop” logo during boot.
• HackBGRT – A UEFI bootloader manipulation tool used.
• Secure Boot must be disabled.
• Always create a System Restore point and a Recovery Drive before touching the EFI partition.
• A viral-worthy, personalized boot sequence that screams “Microslop.”

THE WAR AGAINST AI Slop

It greets you every morning. That simple, flat, four-paned window. It’s harmless, really. But it represents something else: conformity. In an era where we customize our phone cases, our RGB lighting, and our desktop wallpapers, the Windows boot logo remains the final frontier of locked-down branding.

But the internet has spoken. The term “Microslop”—a cheeky, satirical jab at the tech giant’s recent flood of AI-services (Copilot) and AI bloatware—has become a rallying cry for digital minimalists and humorists alike.

You don’t just want to change a logo; you want to send a message. Or maybe you just think it’s funny. Either way, you are about to embark on a technical journey into the heart of your computer’s UEFI firmware. This isn’t just a tutorial; it as a protest against increasing AI adoption by Windows.

Warning: Modifying bootloaders involves risks. While the tools we use are open-source and widely tested, The CyberSec Guru is not responsible for bricked systems, nuclear launches, or angry IT departments. Proceed with caution and backups.

What is A BOOT LOGO

Before we start hacking, we must understand what we are changing. In the old days of Legacy BIOS (Windows 7 and earlier), the boot logo was often a simple bitmap buried in the bootres.dll file. It was a simpler time, but also a pixelated one.

With the advent of UEFI (Unified Extensible Firmware Interface), the game changed.

What is the BGRT?

When you see that logo, you aren’t actually looking at a Windows file—at least, not initially. You are looking at the Boot Graphics Resource Table (BGRT). This is a standard ACPI table used by your motherboard’s firmware to display a logo before the Operating System takes over.

Windows 10 and 11 are designed to seamlessly pick up this image and keep it on screen while the spinner (the “throbber”) load, creating a smooth transition from power-on to login.

To change this logo, we can’t just edit a Windows system file. We have to intercept the handoff between the motherboard and the Windows Boot Manager. We have to tell the system, “Hey, don’t look at the manufacturer’s logo; look at this masterpiece instead.”

The “Microslop” Aesthetic

The “Microslop” aesthetic is defined by a deliberately lo-fi, anti-corporate vibe. Think MS Paint masterpieces, Comic Sans font, or distorted variations of the official logo. It is the visual equivalent of a shitpost. To make this guide work, you will need a 24-bit BMP image file of your desired logo. We will cover the creation process bellow, but get your creative juices flowing now.

THE PREREQUISITES

To achieve boot screen modification, your PC must meet specific criteria. If you skip this section, the hack will simply not work.

UEFI Mode is Mandatory

HackBGRT, the tool we will be using, operates strictly on UEFI systems. It does not work on Legacy BIOS (MBR) setups.

How to check:

1. Press Win + R to open the Run dialog.
2. Type msinfo32 and hit Enter.
3. Look for “BIOS Mode”.
   • If it says UEFI, you are golden.
   • If it says Legacy, stop here. This guide is not for you (and converting requires a full disk wipe).

Secure Boot MUST Be Disabled

This is the dealbreaker for many corporate devices. Secure Boot is a security standard that ensures a device boots using only software that is trusted by the Original Equipment Manufacturer (OEM). Since our custom logo injector (HackBGRT) is not signed by Microsoft, Secure Boot will block it.

The Trade-off: Disabling Secure Boot makes your system vulnerable to “Bootkits” (malware that loads before Windows). For a home gaming PC, this is usually an acceptable risk for the sake of customization. For a high-security enterprise laptop, do not do this.

PREPARING THE BATTLESTATION

The Safety Net

Never touch the EFI partition without a parachute.

1. Create a Restore Point: Search “Create a restore point” in the Start menu -> Click “Create”.
2. Create a Recovery Drive (Optional but Recommended): Have a USB stick ready with a Windows installer, just in case you need to repair the bootloader manually.

Disabling Secure Boot

This process varies by motherboard manufacturer (ASUS, MSI, Gigabyte, Dell, HP), but the logic is the same.

1. Restart your computer.
2. Spam the BIOS key (Delete, F2, F10, or F12) before Windows loads.
3. Navigate to the Boot or Security tab.
4. Find Secure Boot.
5. Set it to Disabled.
6. Save and Exit (usually F10).

DESIGNING THE “MICROSLOP” LOGO

This is where the magic happens. You need a file that meets strict specifications.

The Specs

• Format: BMP (Bitmap)
• Color Depth: 24-bit
• Header: 54 bytes (Standard Windows BMP)
• Resolution: Keep it reasonable. 300×300 or 400×400 is standard. Do not try to make a 4K full-screen wallpaper; the BGRT is meant for a centered logo, not a background.

The Design Process

1. Open Microsoft Paint (The classic version is best for the “Microslop” vibe).
2. Set your canvas size to 300x300 pixels.
3. Draw:
   • Idea 1: The word “Microslop” written in jagged red Comic Sans.
   • Idea 2: The four-pane Windows logo, but the squares are melting.
   • Idea 3: A literal trash can icon.
   • Idea 4: … Or just replace Micro”soft” with Micro”slop”
4. Save: Click File > Save As > BMP Picture.
5. Crucial: Ensure “24-bit Bitmap” is selected in the “Save as type” dropdown. Name it splash.bmp.

DEPLOYING THE PAYLOAD (HACKBGRT)

We will be using HackBGRT, an open-source tool developed by Metabolix. It serves as a proxy bootloader.

Download

1. Go to Google and search “HackBGRT GitHub”.
2. Click the first result (Metabolix/HackBGRT).
3. Navigate to the Releases section on the right.
4. Download the HackBGRT-x.x.x.zip file.

Installation

1. Extract the ZIP file to a folder on your desktop.
2. Open the folder.
3. Right-click setup.exe and select Run as Administrator.
   • Note: Microsoft Defender might freak out because it’s an unknown executable editing boot files. If you downloaded it from the official GitHub, you can click “More info” > “Run anyway”.

The Command Line Interface

A command prompt window will open.

1. It will verify your Secure Boot status. If Secure Boot is on, it will yell at you. Go back to Chapter 3.
2. If Secure Boot is off, press I (Install).
3. A configuration file (config.txt) will open in Notepad. Don’t touch this unless you are an advanced user. Just close the Notepad window.

The Swap

1. After closing the config file, HackBGRT will automatically open MS Paint with the default splash.bmp.
2. This is the moment of truth.
3. Click File > Open and select the “Microslop” BMP you created.
4. Alternatively, you can just paste your drawing over the existing canvas.
5. Click Save in Paint.
6. Close Paint.

Finalizing

The command prompt will say “HackBGRT is now installed.” Press any key to exit.

THE MOMENT OF REVELATION

Restart your computer.

If you did everything right, the following sequence will occur:

1. Power button pressed.
2. Screen lights up.
3. Instead of the boring ASUS/Dell/Windows logo…
4. THE MICROSLOP LOGO APPEARS.
5. The familiar spinner appear underneath it.
6. Windows locks screen loads.

Congratulations. You have successfully defaced your corporate operating system.

TROUBLESHOOTING & EMERGENCY RECOVERY

Did it go wrong? Don’t panic. Here is how to fix a botched install.

The “Black Screen of Death”

If the logo is incompatible or the resolution is weird, you might just get a black screen during boot, followed by Windows loading normally.

• Fix: Run setup.exe again, select Change, and try a smaller, simpler image.

The “Boot Loop” (Rare)

If the computer refuses to boot into Windows:

1. Insert your Windows Recovery USB.
2. Boot from the USB.
3. Go to Troubleshoot > Command Prompt.
4. You need to mount the EFI partition and delete the HackBGRT folder.
   • mountvol S: /S
   • cd /d S:\EFI
   • Look for a HackBGRT folder and remove it, or restore the Microsoft bootloader using bcdboot.

Removing HackBGRT

Tired of the joke?

1. Run setup.exe from the HackBGRT folder.
2. Press R (Remove).
3. Your original boot logo is restored instantly.

WHY THIS MATTERS

Why go through all this trouble for a 5-second image?

1. Ownership: In a subscription-based world where we own nothing, modifying firmware feels like reclaiming property.
2. Aesthetics: A consistent color scheme. If you have a white setup, a black boot screen breaks the immersion.
3. Humor: Life is short. Seeing “Microslop” every morning is a reminder not to take technology—or life—too seriously.

FAQ: FREQUENTLY ASKED QUESTIONS

Q: Will this void my warranty? A: Technically, software modifications shouldn’t void hardware warranties (Right to Repair), but if you brick your motherboard via BIOS flashing (which this isn’t, but still), manufacturers might be difficult. Reverting to stock usually hides the evidence.

Q: Can I use a GIF or animated video? A: No. The BGRT specification is for static images only. Windows does not support animated boot logos natively. There are complex hacks involving bootres.dll editing for animation, but they break with every Windows Update. HackBGRT is safer and more stable.

Q: Why is my logo stretched? A: The BGRT doesn’t always handle aspect ratios correctly. If your logo looks wide, try resizing your source image to be narrower (squished) so it stretches back to normal during boot.

Q: Does this work on Windows 10? A: Yes, the UEFI structure for Windows 10 and 11 is virtually identical regarding BGRT.

Success!

You’ve done it. You’ve successfully injected a piece of your personality into the most locked-down part of the Windows ecosystem. Whether it’s a “Microslop” meme, a cyberpunk emblem, or a picture of your cat, your PC is now uniquely yours.

This guide was written to be the definitive source on the internet for this specific modification. If you found it helpful, share your “Microslop” boot screens on Twitter/X and tag us!

Remember: The computer is yours. Make it look like it.

Disclaimer: “Microsoft,” “Windows,” and the Windows Logo are trademarks of the Microsoft group of companies. “Microslop” is used here for satirical and educational purposes under fair use principles.