Error 0x80070091

[ALP]

I have a folder of pictures.

Out-of-the-blue, when I try to open the folder I get a message that it is
not openable and is corrupted.
When I try to delete it, it won't delete, and I get an error message
0x80070091.
So, I'm stuck. I can't open the folder nor get rid of it.

I have done extensive research on this. People suggest doing scandisk, which
didn't help for me.
Most people I came across said the only way their problem got fixed was by
wiping out the entire hard drive and re-installing Windows.

Can anyone help me out?

Thanks!

[Mark L. Ferguson]

Open a command prompt, and log onto the folder that is the parent, above
that corrupt folder. Run the command:
RD /Q /S *

[ALP]

Mark,
Hi!
Since I'm a novice, could you please give step by step instructions for me
how to open a command prompt etc.?
Thanks.

[Colin Barnhorst]

Click the Start Orb, type 'cmd' in Start/Search and press Enter. Be sure to
include the spaces in Mark's string and type it at the prompt in the Command
window. Then hit Enter.

[ALP]

Thanks Colin.
How about the rest.
Suppose the folder is under pictures and named July, how do I write it in
the Command Prompt in order to try Mark's code?