You can go here -> Add Take Ownership to Context Menu in Windows 10 download it and run it. Then go in file explorer and highlight the win7 directory and right click and select take ownership. After that is done, you can delete that directory .
Thanks, again. I was finally able to delete the folder by making my User/administrator account the "Owner" of the folder. It freed-up a lot of space on my 250GB SSD drive, which I use as a program disk with all data going to a 4TB hard disk drive. I just hope I haven't deleted anything I'll need to run programs. So far, so good!
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