Windows Tools

I think there may be some confusion about a couple of built in tools for Windows:
Che
Check Disk will scan and repair errors on the hard drive
Search for the directions depending on your Windows version
Here it is for Windows7
http://windows.microsoft.com/en-us/windows7/Check-a-drive-for-errors

Windows Disk Cleaning tool removes unnecessary stuff from the hard drive
Search for the directions depending on your Windows version.
Here it is for Windows 7
http://windows.microsoft.com/en-us/windows/delete-files-using-disk-cleanup#delete-files-using-disk-cleanup=windows-7

and remember, if you want to remove any programs, use the Windows built-in uninstalling/removal tool.  Don't just try to randomly delete the program from your hard drive.
here's a walk through for Windows 7
http://www.wikihow.com/Remove-Programs-%28Windows-7%29

Personally, my pcs run much faster without an intrusive viral program.  All I use is Windows Defender, Malwarebytes, and the common sense not to click randomly on links to keep my devices running smoothly.
I use alot of caution when downloading and installing Freeware too.
If I goof, it is Malwarebytes to the rescue
https://www.malwarebytes.org/
(one of my worse infections came from what I thought was a reliable source, an Adobe Flash update)
If a suspicious item keeps returning, run Windows in safe mode (restart pc and keep tapping F8) then open Malwarebytes

Highly recommended anti-virus programs have slowed down my pcs instead of keeping them churning.

To stream faster without advertisements, try an Adblock program
like https://getadblock.com/

and clear your browser cache regularly:
http://neverendingplateau.blogspot.com/2013/08/nia-js-and-donna.html

If video is not playing or loading well, refresh or reload the page.

If you want to download a video without special software, I like this site:
http://en.savefrom.net/


For more tips from Google
https://support.google.com/youtube/checklist/3480866?hl=en&ref_topic=6077002

and Tips for Chrome
https://www.wiknix.com/google-chrome-8-ways-to-speed-up-google-chrome/