At an elevated command prompt, enter cd /d d:\ in order to switch to the D drive. Next, enter dir to verify the filename(s) of the file(s) you wish to delete.
To delete the file, right-click in the command window and click Mark. Now, highlight the appropriate filename and press Ctrl + C to copy the information to the clipboard. At the command prompt, type del /f " and then right-click + Paste to enter the previously saved information (the filename). Finish by entering " (there should be no spaces between the " characters and the filename) and then execute the command. This should delete the file. Check by reissuing the dir command. Note that you may also use erase instead of del, and if you add the switch /p you will get a confirmation prompt. You will need to repeat this for each file that needs deleting. Copying the filename in this manner removes the possibility of errors creeping in when typing the name, as it is very easy to confuse some characters for others (such as O,o,0 and l,1,i,I to name a few). This misinterpretation of the characters in a filename can often give rise to the error you mention (what you type looks correct, but it isn't).