Venice Unleashed

i was playing game about 3o min ,and all of a sudden it disconnecnts, now i cant even log in to my id ,what should i do ?

Server ain't down for the current moment and what you have is a bug
to fix that do this
reboot your router (change your IP address)
Go to "C:\Users\%username%\Documents\BFBC2"
Delete the file "GameSettings.bin" and "GameSettings.ini" and also the folder named "input"
now start the game and login

i did all this but still i cant log in!!!

Just wait. Your credentials were still logged in. You can't login twice.
Normally the server kills every connection after a short period of time if the client does not respond.

Patience!