Instead of deleteing one at a time, try this:
When selecting something to delete, hold down the CTRL key and select several at a time. For example, you can highlight 5 at a time. RIGHT click on one of the highlighted entries then choose DELETE.
OR you can press CTRL and the A key at the same time to highlight everything, then right click, choose Delete.
Anything that cannot be deleted will result in a screen telling you it won't be deleted. There should be options asking what you want to do, choose the appropriate one so you will not be asked the same thing for each one that will not delete.
Windows.old is created when you reinstall the OS from a disk. It back ups all files and folders which you can use after the reinstall to copy or move pictures, documents, music, favorites, etc. on the new installation.
Edited by Queen-Evie, 20 January 2015 - 11:19 AM.