All sounds great, all things working normally! Back to normal.
You sorted Aero great, just put the link in for you JIC.
Security: Is Norton subscription, or on one of these free offer jobs?
I took Norton off my comps & replaced with Microsoft Security Essentials, to me a better program, & it's FREE.
Defender is part of MSE. If your Norton giving you problems I would get rid of it & put MSE in. Your choice of course.
Too many things running will slow any computer down, but remember you have to leave the essentials on to protect what you got!
You know computers, so you know what to do.
So, any other worries/concerns on your computer?
Have we sorted all the problems?