[PC]Battlefield Hardline: problem when trying to play online

Hey guys!

The problem: I can play hardline singleplayer with no problem, but when I try to join a multiplayer server battlelog writes: Joining Server for about 1 minute, it shows up on the windows tray and dissapears after 20 seconds.
I looked at the task manager, when I click join the game and the game helper (sorry, I dont remember the file's name), the game uses ~70MB memory, when it appears on the tray it raises to ~250-300 MB, and after around 20 seconds it dissapears from the tray and from the task manager too.

My system:

Dual core Intel processor @2.6 Ghz

4 GB of DDR3 memory

Gigabyte Geforce GTX 750TI graphics card

(I know my CPU is weak but it hits the minimum req. and I can run singleplayer (of course the multiplayer is a bigger work for the PC but I was in the hardline beta too, and there I could play the multi) so I think the problem is not in my specifications)

I have a Tplink wifi router, but the internet comes wired to my PC.

The things I've tried:

Creating a profile for the game in the Nvidia controll panel.

Repairing the game in origin.

Deleting the game's folder from the documents folder.

Creating a new administrator account on my pc and tried to run the game from there.

Port forwarding on the windows firewall (I havent tried port forwarding on my router (I'll try it when i get home))

Tried to run the game after clean booted my pc.