I know this is only a half-arsed bug report, but there isn't much info I can give. Sorry about that.

ArmA3 (both -dev branch and production) reliably hard-lockups my PC, with a screen that looks like in the screenshot. It isually takes about 5 to 15 minutes, but most often it happens when switching UI transitions (for example, entering the editor, or leaving the multiplayer menu back to the main menu).

This has been happening since the alpha was available, and it only ever happens with arma3. No other game (including A2OA) or any benchmark ever provokes this. No mods.

No logs are in Event Viewer or anywhere else. By the looks of it, the whole system hangs, including kernel, IO, networking. Sound loops the last-transmitted sample.

sys:

• Windows 7 64bit, latest patches
• Intel 3930x
• 32GB ram - memtest checked out ok
• AMD 7970 (Asus DirectCU2), latest drivers (13.9), but happened with older versions too; single-screen on 2560x1600
• no overclocking, no heat issues
• TrackIR 5

Any tips/hints? I'm at a loss.