Thread: Windows showing error after COD installed

I am having the desktop computer system which has the Windows 7 ultimate operating system. .I installed Call of Duty. After installation of game my system freezes. After restarting the system everything is fine. Before any crash to system take places please give me solution which restores Windows. Any help would be highly appreciated. Thank you.

Boot your system in safe mode. After that delete all untrusted applications. Also check the unsuited driver problems. Otherwise boot from Windows Disc. This disc is OEM CD given to when you purchase Windows. choose repair option from to repair Windows back