I am using windows 7 and Intel i3 processor in the system which is having 360 GB hard disk. Actually I have done this entire thing after a formatting of the system which is done recently. Actually the problem I am suffering is due to the desktop window manager. I was using aero theme in the system which I was already using previously. But in this system it is not working as after this formatting I have installed a Sis Mirage Graphics with the entire latest driver. When I attempt the "Troubleshoot troubles with clearness and other aero things" I find as a consequence to "desktop window manager is disabled" this message is showed by the system. What could be causing this? Please help me.