Under stood. Id still like to proceed with the repairs below.
For good measure lets reset the pram.
Shut down your Mac.
Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on your Mac.
Immediately press and hold the Option-Command-P-R keys. You must press this key combination before the gray screen appears.
Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time.
Release the keys.
Once your mac starts, lets try one more repair just to be thorough.
Download and install the free mac antivirus from Avast.
The days of mac viruses being rare are long past. You probably do not have a virus. But considering the program is free, theres no downside to downloading, installing it, and having it run a scan. And that will help ensure that your machine is running smoothly and safely.
If you encounter further issues, or if any problems pop up or remain, you are welcome to reply to this same conversation and I will continue to assist you until those issues are resolved.
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Senior Technician and Network Switching Systems Operator / Maintainer.