Re: Make sure that port 3659 (UDP) is open

To try and help you read this if not done or recheck all steps are done..

http://help.ea.com/in/article/backing-up-and-restoring-your-origin-games/

If this fails to help then give this a try as it sure cant hurt...

Run a Clean Boot: http://help.ea.com/en/article/how-to-clean-boot-your-pc/
This should ensure that no programs are interfering in the background.

Check your firewall to be sure it is open to the game and not blocking it.
Below are programs known to make issues in BF4

Disable Mantle if you have it and try Direct X, Turn OFF Anti-Aliasing Deferred in video card settings in game. If you have page file turned off then turn it back on as this can make errors even with 32gigs ram.

Others have said if they uninstall MSI Afterburner issues / crashing is stopped. So if you have this installed remove program and test BF4. Also look at other programs as Asus Game First Service, Razer synapse, Razer Cortex, Qualcomm Killer Service , Fraps, EVGA Precision, Geforce experience, be sure to turn off the streaming function that is enabled by default ,Raptr, RivaTuner , ASRock eXtreme Tuner, Steam, Skype, aero ,Overwolf extra program in teamspeak and xfire are known to make issues as well. And I am sure more programs not in my list yet turn one off at a time and test BF4.

Uninstall the HD Audio Driver from the video card driver install add/remove programs. This silly thing makes issues in BF4 for some. Reboot then repair BF4 to be safe.

Another thing to try is re- install origin only not your game just origin.

1. Uninstall Origin completely from Windows Control Panel.
2. Reboot your PC. This is important to clear out any lingering registry files or directories.
3. Download the latest here: http://origin.com/download
4. Install Origin You should not be prompted to update.

If all this fails to fix it then try this...

C:\Users\your PC Name\Documents\Battlefield 4

BF4 folder in my documents holds game configs and screen shots even if BF4 is installed on different drive. When you uninstall BF4 it does NOT remove this folder. So when you install the game again you can still have the same issues. Even if its not a new install it is still worth trying as the game cfg could be mucked up.

1- Go to my Documents and remove BF4 folder place it on your Desktop for now.
2- Be warned you do have to set up your in game settings again.
3-Repair BF4
4- When done go test your game. If it fails reboot your PC and run repair game again and test BF4.