Since recently the Control Panel on my Vista Home Premium SP2 64bit system looks like this:
It’s not like this every time I open it up.
The solution is pretty straightforward: switch to the vista-like look of the control panel, then switch back to the classic one.
Have you ever seen anything like this?
(make your hidden and system folders can be shown)
4.empty recycle bin.
Thanks for your advice Creasy.
Unfortunately it didn’t help :'(.