After buying a win 8/10 computer a year ago and still not liking it much I asked on here about putting win 7 on my xp dell desktop and was advised not to do it and was advised to just buy a win 7 off ebay.
Here is what I've found and got it in.
Works good and I like win7 much better than my win 10.

Thanks for the advice,
John
http://www.ebay.com/itm/Dell-Optiplex-980-MT-w-Core-i5-650-3-20GHz-4GB-RAM-250-GB-WIN-7-64-Pro-/122315927053?hash=item1c7a98ee0d:g:MR8AAOSw95lXEoc0