iMac late 2015 Monterey runs very slow

Security

SystemStatusGatekeeperAbout

App Store and identified developersSystem Integrity ProtectionAbout

EnabledAntivirus softwareApple

Your computer’s security settings. Click the About buttons to learn more about Apple’s security features and built-in malware protection.

Gatekeeper status should always be set to either App Store and identified developers or App Store. 

System Integrity Protection status should always be set to Enabled.  

All antivirus software is also listed. All computers should have Apple’s built-in security software. 

Hide

Unsigned Files

Launchd Filesmega.mac.megaupdaterReview…Running appsMEGAsync.appReview…Login items

MEGAsyncReview…

Plugins

NameInstall dateSilverlightShow2016-10-05 18:50:21AmazonMP3DownloaderPluginShow2017-06-13 17:48:46one unsigned appHide

NameVersionLast usedMEGAsync.app4.6.62022-07-16Show

These files are software that lack a valid Developer ID signature from Apple. Sometimes, unsigned files may be malware. In most cases, however, they are older software files made before digital signatures were commonplace. They can also be recent software with an automatique update mechanism that has invalidated the signature. Without a valid Developer ID signature, EtreCheck cannot tell the difference between legitimate and malicious software.

Use the Review buttons to help you determine if a file is legitimate or malicious. Once you have reviewed these unsigned files, you can use the Hide button or go to the Privacy tab in EtreCheck preferences to hide them.

Unsigned, but legitimate, files do not need to be deleted. However, they may cause problems in the future. Review these files and see if updated versions or signed alternatives are available.

I did not know you could disassemble the iMac and replace the hard drive.

Thank you.

I guess I did not do that?