I have been getting the same exact problems. Sometimes it will do the usual, crash to desktop after any random amount of time (sometimes 10 minutes, 30, or about an hour) while being able to still control my character and hear sounds but can't get back in without quitting it through either task manager or right clicking the DayZ icon from the taskbar and hitting "Close window", and other times (just started recently) the game will completely crash Steam. System specs: OS: Windows 8 64-bit (6.2, Build 9200) System Model: Dell XPS 8700 Processor: Intel Core i7-4770 CPU @ 3.40GHz (8CPUs), ~3.4GHz Memory: 16384MB RAM DirectX Version: DirectX 11 Graphics card: NVIDIA GeForce GTX 645 Approx. Total Memory: 4037 MB Driver updated to 335.23 (anything else lags Arma 3 and crashes Rising Storm) I downgraded my driver a bunch of times to see if It would fix it, nope. My current drver runs Arma 3 beautifully. I noticed that disabling McAffee's firewall while playing will sometimes fix the crashing, but that is temporary and can be dangerous. I haven't tried Razor Booster, if anybody has, does it disable GeForce Experience along with ShadowPlay? Does it even work? Sorry for the really long post, I am urgent to fix this problem, I even contacted NVIDIA about it, no response though. Thinking about downgrading to Windows 7, thinking it could solve it but now as I see others who have 7 are getting crashes too..... D: EDIT: My friend told me a fix, quit steam, make sure DayZ isn't running, and got to: Computer > OS (C:) > Users > (Your name) > My Documents > DayZ and delete your DayZ.cfg folder. Relaunch DayZ and it will reset your video configuration so you will have to redo all of that. Don't worry it won't reset any saved characters. This fixed it for us, try it out if anybody is still looking for a solution!
