The "call of duty black ops 2 failed to allocate from state pool" error is not a sign that your PC is dying. It is a sign that your PC is too new for an old game’s clumsy memory management.
The "state pool" is part of the game’s memory management system. The error occurs when Black Ops 2 tries to reserve a chunk of video memory (VRAM) or system RAM, but the allocation fails. Common triggers include: The "call of duty black ops 2 failed
This will reset your graphics, audio, and control settings, but it won’t delete your campaign progress or multiplayer rank. The error occurs when Black Ops 2 tries
Launch the game. The "failed to allocate" error should vanish instantly. The "failed to allocate" error should vanish instantly
Steam will detect and redownload any missing or broken data. 4. Enable Compatibility Mode