same problem here .. all ports are forwarded correctly
but can not logg-in to any server

it does not revert for me ..
but you can do it manually go to :
Documents\BFBC2
open file :
settings.ini

in beginning of file you will find :
[WindowSettings]
Width=1280
Height=768
Fullscreen=true
RefreshRate=75

adjust to what you want .. save and close

can you tell me what you did to solve the first problem ? what is your system specs ? (OS and general info) also i guess there is something wrong with your dvd or install files ... if you can try it on other computer (if any available ) if not try to download a backup version from internet (torrent ...

ahh sory i mean right click and run as admin also disable UAC control panel .. user accounts .. change user account control settings (but the slider all the way down) if that did not work .. then try to ( copy all DVD files into a folder ) and try running the installer from it .. maybe disable antiv...

i think you should ask in official Ea forums ..

any way try the following
restart your pc
and try to instal as admin
by right click and run on the installer

running as admin will give this application higher value in scheduler so it may work for you
good luck !

thanx RobbingHood every thing works fine now