When I try to delete some old folders on my mac desktop I get error. I have tried some method but failed. Error is shown in description I have tried several methods in the past as well. 

While reflecting on root of problem initially after purchasing mac I had password set which was forgotten within week so I had to used command R feature to reset password. After That everything is working fine but folders and files shown on below screen are not deleted. 


Figure 1

Figure 2

When trying to make any changes such as moving, deleting, renaming to shown folder above request pops up for entering admin password. Even after I enter password following error is shown.


Figure 3

After researching some method to solve this issue I changed the disk permission from other to read and write as shown below in Figure 4 but still same issue mentioned above in picture Figure 1, 2, and 3 is repeated. 


Figure 4

What further I can do to get rid of those files and folders highlighted on fig 1. I am annoyed as they are useless at the moment and I repeatedly have to encounter them.
Have you tried removing/deleting those files and folders through command line using terminal ?


Open Terminal
type rm -r followed by Space
Drop&amp;Drag the files/folders to be deleted into the Terminal window (so the file path gets inserted)
Press Return