I have recently formatted my computer and installed windows 7 operating system again. After installing the windows 7 operating system in my computer I have downloaded and install all the required drivers in my computer and then all the things started working properly. I have downloaded Adobe reader from internet and then I have installed in my computer but after that it has started giving me problem. Now when I open any folder contains PDF file and select thumbnail view at that time it shows Adobe icon instead of pew view and major problem is if I click on the preview pane option and then click on the PDF file at that time I donít get preview. Before formatting my computer whenever I was clicking on the PDF file at that time I was getting preview of the file in preview pane. I donít know what is cussing this problem. If anyone have solution regarding this then let me know thank you in advance.