Your welcome, again! Yes, would just bother me to not to know what is was to prevent it again from happening.

I understand, can leave it open this post for longer. Check if you received windows updates recently. Just still wonder what else it could of been causing this issue, i kind of hate it when do not...

Unless had anything also to do with Windows updates an issue or not completing. Did you keep those drives connected even though you were not finished ? See how it goes, your welcome.

yes, i had mentioned that at beginning about startups to thread starter. We just do not know what was doing it which makes me think may not be resolved, seen service host to run more then one...

I would say disabling it not a solution, as may just start again.

Sorry but this does not really help me to know what is using Service Host: Local System (18) which is one shows at times to be using 47% of CPU, expand it in task manager. Needed to try to use link...

Your welcome, hard to identify these as can be used by any program on PC, first rule out infections. Try free malwarebytes to.
If you can you should also post the Task Managers screen capture of...

Do full system scan with your AV for starters. Sometimes difficult to locate what process is using this from service host, good article here,although applies to Windows 8 can be used to track the...