"At a time"? Not sure what you mean. Note you should not just delete files. You should uninstall the unwanted programs your son installed that you don't want. And that would be one at a time. But before uninstalling, make sure you research it (Bing Google is your friend), and you know for certain it is not needed by Windows or other programs you want.
Bill_ Bright: I think I will leave most of his (my sons) programs alone as I have spent many hours doing as you most intelligently suggested. Since my gift of windows 7 works fine I will leave it mostly intact. Without your insight I may may be looking at a real mess on my win 7. As older XP user [ stubbornly, I must admit] this advice has become invaluable. I am in your debt and appreciate your time to respond. Ps: Please forgive any of my bad grammar or syntax. Again thanks for your time and attention; cortez
You are doing fine. And note, unless you are running low on free disk space, having those programs installed will not hurt anything.
If you want to uninstall multiple programs, then IObit Uninstaller is probably the best option. You can select all of the programs you want to remove and then it will go ahead and uninstall them one at a time and then when it has finished it will scan for leftover files and registry keys from the programs you removed. If any uninstaller wants to reboot, you can let it do so and then when Windows starts again, IObit Uninstaller will give you the option to continue where it left off.
If the programs don't start with Windows, and thus don't run in the background, makes no difference if they're there or not. If they start up and thus consume resources it's easier ans quicker to use Autoruns.
Wow! I got of catching up to do! I can see many hours reading (a good thing). I'll learn things about window 7 for a while and then start my journey to operating it much better which may lead me to Windows 10 and undo my obsession to XP. To all thanks for the much needed info. With regards cortez.