BEDaisy.sys BSOD Crash
What is this error?
BattlEye's kernel driver BEDaisy.sys caused a Blue Screen of Death. The anti-cheat kernel driver conflicted with another driver.
Common causes
- BEDaisy.sys conflict with other kernel drivers
- outdated BattlEye version
- conflicting anti-cheat drivers
- vulnerable driver blocked by HVCI
- corrupted BattlEye installation
How to fix it
- Update the game (updates BattlEye)
- disable HVCI temporarily
- remove conflicting kernel software
- clean reinstall BattlEye
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
A BSOD mentioning BEDaisy.sys means BattlEye's kernel-level anti-cheat driver crashed your system. This is a serious error — a kernel driver crash always means a blue screen.
Most common with PUBG, Escape from Tarkov, Rainbow Six Siege, and DayZ.
How to fix it:
- Update the game — BattlEye updates are bundled with game updates, and newer versions fix driver conflicts
- Check if Windows Memory Integrity (HVCI) is blocking BEDaisy.sys: go to Windows Security > Device Security > Core Isolation > Memory Integrity. Try toggling it off temporarily
- Remove conflicting kernel-level software — other anti-cheats (Vanguard, EAC), fan control software (iCUE, NZXT CAM), and RGB controllers can conflict at the kernel level
- Run 'sfc /scannow' to repair any corrupted system files
- Uninstall BattlEye completely: go to the game folder > BattlEye > run Uninstall_BattlEye.bat, then verify game files to reinstall
- Check Event Viewer > System for the full BSOD details — look for the 'BugCheck' event right before the crash
- If BSODs persist, check the minidump in C:\Windows\Minidump\ for the exact conflicting driver
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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