Please post the EtreCheck output as a "Reply" to this thread
<https://discussions.apple.com/docs/DOC-6174> or <https://etrecheck.com>
Use the EtreCheck -> Edit -> Copy Report (See the image below)
And then Paste the report as a "Reply" to this thread.
If, AND ONLY IF, you get the error:
"The message contains invalid characters"
then try posting to PasteBin.com, and give us a PasteBin URL link.
EtreCheck is a tool that helps Apple Support Community volunteers debug problems without any access to the troubled computers. Debugging problems can be a difficult task even when the machine is in front of you. Attempting it via a discussion forum is extremely difficult. EtreCheck is a great help that regards.
You should also try an SMC reset and an NVRAM reset
<Reset the System Management Controller (SMC) on your Mac - Apple Support>
<How to reset NVRAM on your Mac - Apple Support>