Advanced Full Screen Debugger (AFD) does not work in Windows 7 64bit, so here is the solution for the Students of Virtual University Of Pakistan. <br /> <br />1. First of all check compatibility by using <br /> <br />Hardware-Assisted Visualization Detection Tool. Download from the link below. <br /> <br />http://www.microsoft.com/en-us/download/details.aspx?id=592 <br /> <br />after downloading, run it and you will get the message "The computer is configured with hardware-assisted virtualization". <br /> <br />Once compatibility is confirmed. <br /> <br />2. Then download and install, <br /> <br />Windows Virtual PC: <br />http://www.microsoft.com/en-us/download/details.aspx?id=3702 <br /> <br />3. Now download and install, <br /> <br />Windows Xp Mode: <br />http://www.microsoft.com/en-us/download/details.aspx?id=8002 <br /> <br />After downloading and installation of both the software, follow the video.