Have you ever had a clean reinstall on this PC? This solves almost all of these issues.
A reason I ask is that you are so engaged with your computer and it's performance issues that you should consider advancing to the stage where you gain much more control over it - by learning to clean reinstall, obtain a perfect reinstall, then back it up with an image you can easily restore in 20 minutes if it becomes irreparable or irreparably sluggish.
Trying to obtain Windows 7's native instantaneous, feather-light state is often not possible with all of the preinstalled crapware and useless factory utilities which have much better versions built into Windows 7 - even and especially sometimes when you've uninstalled all of it. Going completely clean unshackles Windows 7 to be itself without the encumbrance.
In deciding if this is the course you want to follow, you'll have to let go of scaredy-cat worries about "ruining" your OS, as you are literally constructing it from new and will learn to have the control you desire. You can take a Windows 7 backup image now so that at any time you can go back. We will also be here to help you all the way. It will actually be easier for us to help you since we know that going completely clean will solve all these issues from the outset, as long as you get and keep a tight grip on what you allow to be installed in the future. Reinstalling Windows 7 Win7 Home Premium x86 SP1 English Official ISO download Windows 7 USB-DVD Download Tool