[SOLVED] BEDaisy.sys BSOD (0x139) – Generic BattlEye reset script for all games

Addressing BattlEye.sys Blue Screen Errors: A Comprehensive Guide to Resolving the 0x139 BSOD Encountered During Game Launches

Introduction

Blue Screen of Death (BSOD) errors can be a frustrating impediment for gamers, particularly when they occur during the launch of popular titles such as GTA V, Fortnite, DayZ, and Escape from Tarkov. A common culprit behind these crashes is related to the BattlEye anti-cheat system, specifically the BEDaisy.sys driver. Users experiencing this issue often see a 0x139 stop code, indicating a driver or hardware compatibility problem. This article provides a professional, step-by-step solution to resolve the underlying issues by safely resetting and reinstalling the BattlEye driver using a custom PowerShell script.

Understanding the Issue

BattlEye is an embedded anti-cheat solution used by numerous multiplayer games to prevent cheating. Its core component, the BEDaisy.sys driver, runs at the kernel level. When this driver becomes corrupted, outdated, or improperly permissions are set, it can cause system instability, resulting in BSOD errors like 0x139. These errors typically occur when the game attempts to load the driver, prompting a system crash.

Solution Overview

To address this problem efficiently and safely, a generalized reset script is available that automates the following actions:

• Stopping and removing the BattlEye Windows service (BEService)
• Deleting the BEDaisy.sys driver file from Windows
• Cleaning residual BattlEye folders from game directories (Steam, Epic Games, etc.)
• Providing an optional quick reset mode that limits changes to driver and user data folders
• Logging operations for review and troubleshooting

This approach ensures that a clean, correctly installed version of BattlEye can be reloaded during subsequent game launches.

Procedure for Use

1. Download the Reset Script

Access the script file through the following link and save it with a .ps1 extension:

Download PowerShell Script

1. Prepare for Execution

2. Right-click your PowerShell application and select Run as Administrator.

3. To execute the script, modify the execution policy bypass as necessary:

   powershell
powershell -ExecutionPolicy Bypass -File "C:\Path\To\Fix-BattlEye-Generic.ps1"

4. Run the Script

Upon execution, the script presents