I opened the launcher through steam and it crashed immediately. A desktop icon now appears every time I try to start the game this is what it says. I just installed a new graphics card and this is what happened during the first launch after the installation, please help I would like to play my game.

Arma 3 Launcher Exception Log

(\___/) Arma 3 Launcher encountered an unexpected error described below.
(='.'=) Sorry for the inconvenience.
(")_(") Please report this on Arma 3 Feedback Tracker (http://feedback.arma3.com). Thanks to you we may fix the issue faster... and the bunny will be happy!

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System information

Date: 2015-07-18 23:03:23 / 2015-07-18 19:03:23 -04
Current dir: C:\Program Files (x86)\Steam\steamapps\common\Arma 3
AppData dir: C:\Users\Brandon\AppData\Local
Command line: "C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3launcher.exe"
CLR version: 4.0.30319.34209
OS Version: 6.2.9200.0 (Microsoft Windows NT 6.2.9200.0)
OS 64 bit: True
Process 64 bit: False
Personal dir: C:\Users\Brandon\Documents
Culture: en-US
UI Culture: en-US
Point of log: Starup parameters handling default flow

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Exception

System.IO.FileNotFoundException: Could not load file or assembly 'log4net, Version=1.2.13.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a' or one of its dependencies. The system cannot find the file specified.
File name: 'log4net, Version=1.2.13.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a'

   at Launcher.StartUp.StartGui(InitArgs param)
   at Launcher.StartUp.HandleCommandLine()

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].