Can you try kill all unnecessary application before start Arma?

I've found the problem thanks to this. The problem is Zone Alarm Free Firewall 11.0.000.057

You should add this software to the known problematic software. Should I report this to Zone Alarm?

Amazing. Found the true problem: Private Firewall 7.0.29.1

When I close that firewall, which I've recently installed on my system, every game that I've been having problems with works perfectly.

ADD PRIVATE FIREWALL TO THE KNOWN PROBLEMATIC SOFTWARE!!!

I've upgraded to a new ATI 7870, and I've deleted the nvidia graphics and any realtek sound driver... now it's working at fullscreen while launching.

However, I'm having the same complete freeze with other game (Sniper Elite V2) and I'm pretty sure this has to be related with the f*** on-board realtek audio.

This ticket could be closed, but I would suggest you to take note about the realtek issue...

Thank you.

Haha! ^_^

Good one, but don't worry, I didn't upload any rar so you just added a new one.

What driver cleaner can I use?

I've already uploaded those two files, do you need me to pack them and reupload them?

The status shows: "need more info". Should I add anything else?

Nop! Even when playing successfully.

Added clean arma3.rpt when crash happened.

I've configured the game to windowed fullscreen and it's also launching without problems.

@Astaroth: http://feedback.arma3.com/view.php?id=1131

Not a developer, but try to launch the game on windowed mode. That worked for me...

@Astaroth: how can I change my ticket from private to public? I can't find the option.