I do not know why like this is happening in my system. Before this I have another graphic card and it run without any kind of issue. But when I try to install the Nvidia GeForce4 MX 440 so the windows 7 operating system is unable to recognize it. Regarding this I have visited many of the forum site but not able to get any kind of proper solution which can fix my issue. So if you guys have any solution which can fix my problem so please share it I will be thankful for this.