Applications are non responsive

i made changes in my c drive since then my application are non responsive and acting weired. Please help me i m not able to use my laptop

What changes you did in which program?
Provide some details about it..
so as it is useful for others to help you..

I made a new folder in my c drive and moved all folders to it when i saw that the applications are acting wiered i moved them again c drive but few folders are not moving at all.

How come the applications act weird?...
does the application not open or you got any errors?

It is like no copy pasting is happening from the other devices. VLC is non responsive, and dvd drive is not working. I just spoke to my frnd and he mentioned that the path is broken and system needs to be reset or formatted.

I also want to mention that the internet explorer is also not working.

Work through the Troubleshooting Steps for Windows 7 which will normally turn up the problem.
post the results first..
or
I would take this opportunity to do a perfect Clean Reinstall - Factory OEM Windows 7
to go from the worst install possible to the best install possible and finally enjoy for the first time Win7 native performance.

thanks all its done now I restored my laptop.