Can't open folders, please help :(

Question

Well it appeared couple of weeks ago, I thought it's my USB problem, but after I tried to open folder on Mac I had the same problem.
So basically this is what happens:
When I open any folder, lets say "folder one" and it contains some files and folders, lets say "folder two" I can open any files or folders inside of the "folder one". "folder two" sometimes is invisible and becomes visible only when I starting to move everything in folder (everything what I can't actually see), after they appears, but the names of folders and files sometimes just in black square, sometimes in black lines, sometimes has very very black shadow(not like the usual one). After I wait for an hour and open and close "folder one" eventually I can open and see files, but it feels like it gets worse and worse... Is there any chance to do something without reinstalling?
Thank you!!

Answer 1

Incidentally, another thing I did was expand one of the offending folders in List view in my Documents folder, so I actually can't even open my Documents folder in Finder. In other words, say I had a folder in my Documents folder called "Pix". In the List view of the Documents folder, I clicked the arrow next to "Pix" and since that expanded "Pix," which I can't seem to open, it shut down the Finder window. So now whenever I try to open my Documents folder, it shuts down the window, since it's also trying to open the (expanded) "Pix" folder. A stopgap measure for un-expanding that folder would also be appreciated, if anybody has any smart ideas.
Thanks.