League of Legends Blue Screen (BSOD) Troubleshooting Guide

A BSOD (Blue Screen of Death) during League of Legends indicates a **system-level crash**, not a game bug. The game triggers hardware/driver conditions that expose instability. Follow this diagnostic ladder:

1. Capture the Stop Code

Next BSOD, note the code (e.g., VIDEO_TDR_FAILURE, MEMORY_MANAGEMENT, WHEA_UNCORRECTABLE_ERROR). Photo it. This points directly to the subsystem.

2. GPU Drivers (Most Common)

• Clean install latest **Game Ready Driver** (NVIDIA) or **Adrenalin** (AMD) via DDU (Display Driver Uninstaller) in Safe Mode.
• If on latest, roll back 1–2 versions (new drivers sometimes regress).

3. Overheating / Power

• Monitor GPU/CPU temps in-game (HWInfo, Afterburner). >85°C GPU / >90°C CPU = throttling/crash risk.
• Clean dust, replace thermal paste (GPU/CPU), ensure case airflow.
• PSU: Must be Tier A/B (Cultists list), 550W+ for mid-range, 750W+ for high-end. Test with OCCT PSU test.

4. Memory (RAM)

• Run **MemTest86** (USB boot, 4 passes). Errors = bad stick/slot/IMC.
• Disable XMP/EXPO/DOCP; run at JEDEC speeds. Stability > speed.

5. Software Conflicts

• Disable overlays: Discord, Steam, GeForce Experience, Xbox Game Bar, RGB software (iCUE, Armoury Crate, Synapse).
• Antivirus: Add LoL folder to exclusions; try Windows Defender only.

6. Windows & Game Files

• Run `sfc /scannow` & `DISM /Online /Cleanup-Image /RestoreHealth` in Admin CMD.
• Repair LoL via Riot Client → Settings (gear) → Repair.

7. Overclocking

Revert **all** overclocks (CPU, GPU, RAM, BCLK). Test stock.

If BSOD persists with stop code + minidump (C:\Windows\Minidump\*.dmp), upload to TenForums BSOD analysis or send to a tech-savvy friend.