I am using a laptop from my company, installed with Windows 7. I found that I cannot delete the files to Recycle Bin. The files will always deleted permanently without going to the Recycle Bin.
I am sure that the setting of the Recycle Bin is not "Remove files immediately when deleted".
Then, I checked that, deleting files work fine in other drives, but only C: does not work. Besides that, C:\$RECYCLE.BIN is missing, but D: and E: have the $RECYCLE.BIN. I think that is why there is no problem other drives to use Recycle Bin.