dsll2010

I have downloaded a portable WPU at the official site today , and uninstalled a program by it. Then I found WPU deleting files at the folder of C:/.../Microsoft Office/Shared files/.. It's strange. After some seconds, WPU finished deleting, I couldn't find my Office links, what's more, I find my D Disk has lost its half data!!! My D Disk always has 270+GB data, but now it was only 170GB. Many many important data has been lost. What's the matter???? How can I recovery my data! It's very very serious. ========= My OS: Windows 8 Pro eng x64