So many Manuals.
Internet Explorer's boring.
You're probably already safe by you already being here and not asking questions about an infection.
Probably want to change from IE though since Microsoft might just axe it.
Have you considered moving to Windows 10?
I would suggest elevating UAC to max.
What do you use for backups as you should implement some type of system & data backup solution.
Consider the Chrome extensions already suggested as well as CCleaner or Privazer.
Thanks for sharing your config