After attempting in vain to resuscitate my Win 7 machine, I bought a new Acer with Win 10 factory installed (not an upgrade). I was thrilled when I loaded my old programs, tested them and all worked.
Enter the MS Upgrade Monster. (insert appropriately sinister music here)
The updates appear to be automatic with no provision to prevent them. Now none of my MS Office 2000 applications will respond to a "Save" or "Save as" command. (Yes, I realize that it's a 16 year old program, but it worked fine on Win 7 and also worked fine on Win 10 before MS installed an upgrade that apparently blocks it.)
MS has kindly allowed me a 30 day trial of Office 2016 which they will gladly rent to me for the paltry sum of $10/month.
Other than that, and that this machine seems to have issues staying turned on, first try, in the day, (Yes, I turned off all power saving options), I'm pleasantly surprised at how painless it was to switch to Win 10 from Win 7.
I open the File Explorer at the beginning of my sessions and work from there. It looks pretty much the same as in Win 7. I've been able to find where to put the files I saved from Win 7 with all my passwords, bookmarks and email addresses. All the applications that use those run as before.
I'm not thrilled with the photo viewer replacement in this version, but I'll learn to love it with time.
If only I can find a way to go back to using a Microsoft Office that I won't have to rent for the rest of my days, and this particular machine will turn on and stay on, first try, I'd be a big fan of Windows 10.