Windows Aero Dies when browsing folders on other compute

I am having two computer systems and both of these computers has Windows 7 Ultimate installed on it. One of these machine i am using for Gaming and Movies which has 40" tv attached as a second screen XD and second one is for storage and other uses. Now when i am browse a folder on second pc then i have seen that the Windows Aero on first machine dies. Transparency settings gets disabled and screen starts flashing on browsing it.

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