How to Fix 0X3D Error – Stuck in BIOS Boot Loop after M.2 Swap on new MSI B850
BIOS Boot Loop after M.2 Swap on new MSI B850 / 9800X3D with USB Installer Rejected
📋 Table of Contents
The problem occurs due to the M.2 swap causing a conflict between the two drives, resulting in the BIOS boot loop. This issue is likely caused by the USB installer rejecting the Crucial T500 drive due to its different specifications compared to the Lexar drive.
⚠️ Common Causes
- Using a different M.2 drive in the same slot.
- Conflicting drive specifications.
- Bios not recognizing the new drive.
🛠️ Step-by-Step Verified Fixes
Method 1: Revert M.2 Swap and Boot from Legacy Mode
- Step 1: Remove the Crucial T500 drive from the top slot.
- Insert the Lexar drive back into the top slot and boot up your PC in Legacy mode (if available).
- Update your BIOS to the latest version if not already done.
Method 2: Disable M.2 and Boot from USB
- Step 1: Enter your BIOS settings by pressing F2 (or the key indicated in your motherboard manual).
- Disable M.2 and set the USB drive as the primary boot device.
- Save changes and exit the BIOS settings.
Method 3: Perform a Clean Installation with a Different USB Installer
- Step 1: Create a new Windows installation media using a different USB installer (e.g., Microsoft Media Creation Tool).
- Insert the new USB installer and boot up your PC.
- Follow the on-screen instructions to install Windows.
💡 Conclusion
By following these steps, you should be able to resolve the BIOS boot loop and successfully install Windows on your MSI B850/9800X3D motherboard.
❓ Frequently Asked Questions
🛠️ Related Fixes
How to Remove Virtual Network Adapter causing Hidden Network
Resolve hidden network issues by identifying and removing a problemati
SSD Not Showing Full Volume Space in Disk Management
Discover why your SSD's full volume space isn't showing up in Disk Man
How to Fix Lenovo LOQ Performance Issues
Resolve Lenovo LOQ performance issues by updating drivers, running a d