If you’re still stuck, drop a comment below with your GPU model and whether you’re playing Multiplayer, Zombies, or Campaign.

Select High Performance to assign your primary GPU directly. Step 5: Save the settings and reboot your computer. Summary Table: Quick Troubleshooting Guide Solution Method Success Rate Windowed Mode + Lowest Settings Passing specific campaign crashes (e.g., Karma Heli crash) Very High Restarting the Mission Clearing stuck engine memory loops from faulty auto-saves High Steam Cache Verification Fixing broken scripts and corrupted download assets Medium Windows 7/8 Compatibility Resolving modern OS memory stack and engine conflicts Medium

On modern PCs where high-end GPU drivers try to push features that the legacy 2012 engine cannot handle structurally Step-by-Step Fixes to Resolve the State Pool Crash

Go to and choose Rewind Story to the mission prior to the crash.

Launch the game. The "failed to allocate" error should vanish instantly.

If you are trying to play Black Ops 2 Multiplayer or Zombies in the modern era, using the standard Steam launcher is highly discouraged due to security vulnerabilities and optimization bugs. The community-standard solution is .

: Some users found the error occurs when only parts of the game are installed. Ensuring that Single Player, Multiplayer, and Zombies are all fully installed and updated on can resolve dependency failures. Language Tweaks

The fastest way to bypass this memory bottleneck is to temporarily reduce the strain on the game's internal memory pool. Launch . Navigate to Options from the main menu, then select Video .

[Steam Library] ➔ Right-Click [Black Ops II] ➔ [Properties] ➔ [Installed Files] ➔ [Verify Integrity of Game Files]

Outdated graphic handshakes will choke older DX9/DX11 title memory channels.

Navigate to the game's internal folder using your file explorer. Run vcredist_x86.exe and choose the Repair option.

This is the first and easiest step for any Steam game issue. Corrupted or missing game files are a frequent cause of crashes.

Corrupted or missing game files are a common cause of crashes. Verifying them will replace any files that are broken.