PC Game Technical Support & Diagnostics

PC Game Error & Crash Resolution Database

Diagnose and fix PC game crashes, anti-cheat initialization blocks (VAC, Vanguard, Easy Anti-Cheat), VPK file corruptions, and DirectX TDR driver timeouts.

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Instant Crash Resolution Database

PC Game Error Code & Crash Solver

Search error codes, anti-cheat failures (VAC, Vanguard, EAC), and GPU driver crashes with 1-click command repairs.

CS2

VAC Was Unable to Verify Your Game Session

Symptom

Kicked from matchmaking queue with VAC session error prompt.

Root Cause

Corrupted Steam Service DLL permissions, anti-virus background process interference, or stale Steam cache files.

Step-by-Step Fix Guide

1Exit Steam completely (Right-click Steam icon in System Tray -> Exit).

2Press Windows Key + R, type `cmd`, and press Ctrl + Shift + Enter to launch Command Prompt as Administrator.

3Run the Steam Service repair command below.

4Restart your PC and verify CS2 game file integrity in Steam Library.

1-Click Command Prompt Fix (Run as Administrator)

"C:\Program Files (x86)\Steam\bin\Steamservice.exe" /repair

VALORANT

VAN 1067 / VAN 9003 (TPM 2.0 / Secure Boot Required)

Symptom

Vanguard anti-cheat prevents VALORANT launch on Windows 11.

Root Cause

Windows 11 requires Trusted Platform Module (TPM 2.0) and UEFI Secure Boot enabled in motherboard BIOS for Vanguard kernel initialization.

Step-by-Step Fix Guide

1Restart PC and press DEL / F2 to enter Motherboard BIOS Setup.

2Navigate to Security / Boot tab and ensure Boot Mode is set to UEFI (disable CSM / Legacy).

3Enable Secure Boot and set TPM / fTPM (AMD) / PTT (Intel) to Enabled.

4Save settings (F10) and reboot into Windows 11.

Dota 2

Corrupt VPK File Mismatch

Symptom

Game crashes during hero selection or map loading screen.

Root Cause

Unstable RAM overclock (XMP/EXPO) or corrupt VPK texture archive file on storage drive.

Step-by-Step Fix Guide

1Open Steam Library -> Right-click Dota 2 -> Properties -> Installed Files -> Click "Verify integrity of game files".

2If VPK errors persist, test RAM stability using Windows Memory Diagnostic or MemTest86.

3Ensure Dota 2 is installed on an SSD rather than a fragmented HDD.

Apex Legends

Easy Anti-Cheat Untrusted System File / Code 100

Symptom

Apex Legends fails to launch or closes after splash screen.

Root Cause

EasyAntiCheat service driver file corruption or overlay hook conflict (RivaTuner, Discord overlay).

Step-by-Step Fix Guide

1Navigate to `C:\Program Files (x86)\EasyAntiCheat` in File Explorer.

2Launch `EasyAntiCheat.exe` as Administrator, select Apex Legends, and click "Repair Service".

3Disable Discord in-game overlay and GeForce Experience overlay.

Fortnite

Unreal Engine 5 Out of Video Memory

Symptom

Fortnite crashes to desktop with D3D12 GPU Memory Error.

Root Cause

Nanite / Lumen high-res textures exhausting GPU VRAM buffer on cards with less than 12GB VRAM.

Step-by-Step Fix Guide

1Switch Fortnite Rendering Mode to "Performance (Lower Graphical Fidelity)".

2Lower Texture Quality setting to Low or Medium.

3Increase Windows Virtual Memory Paging File size to 1.5x your physical RAM.

Windows / GPU General

NVIDIA / AMD Display Driver TDR Timeout (DXGI ERROR DEVICE REMOVED)

Symptom

Screen freezes for 3 seconds, goes black, and crashes game with TDR driver error.

Root Cause

Windows Timeout Detection and Recovery (TDR) timer triggers when GPU takes more than 2 seconds to render a complex frame under heavy load.

Step-by-Step Fix Guide

1Perform a clean GPU driver reinstall using Display Driver Uninstaller (DDU) in Windows Safe Mode.

2Increase Windows TDR Delay registry key from 2 seconds to 8 seconds using the command fix below.

3Disable aggressive GPU factory overclocks using MSI Afterburner.

1-Click Command Prompt Fix (Run as Administrator)

reg add "HKLM\SYSTEM\CurrentControlSet\Control\GraphicsDrivers" /v TdrDelay /t REG_DWORD /d 8 /f

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