Re: "Not Responding" message
Give me your computer specs, starting with age.
Processor, Hard drive (and how much space available) RAM.
What are you doing when this happens? Just... nothing, then you open a folder and BAM! Or... are you playing Entropia or Crisis and high everything?
For future reference, windows was stupid with that. When you open the task manager, the first tab is virtually useless most of the time for ending programs. Now Processes is the real prize. If you want to learn about computers, start toying with those. If you end something in Processes, it will end. You won't see folders in there, but you'll see iexplorer and stuff. If you end something that does something bad (like explorer.exe, go ahead and try it) it will be ok... just open up the task manager and go to File>New Task and type in what you ended (explorer.exe).
Or you can hold down the Windows Logo key and press R and run something there.
So that was sort of off topic, but not really. It will help you with these same kinds of problems.
On that note, is this only with folders, or is this with everything?