Mamma mia che casino in quel Mac, da notare alcuni punti:
Major Issues:
Anything that appears on this list needs immediate attention.
Failing hard drive - This computer has a hard drive that appears to be failing.
Unsigned files - There are unsigned software files installed that could be adware and should be reviewed.
System Integrity Protection disabled - System Integrity Protection is disabled. This computer is at risk of malware infection.
Apple security disabled - Apple security software is disabled. This computer is at risk of malware infection.
Adobe Flash Player installed - Adobe Flash Player is installed on this computer. This is a security risk and no longer supported.
Minor Issues:
These issues do not need immediate attention but they may indicate future problems or opportunities for improvement.
Apps crashing - There have been numerous app crashes.
Unsigned files - There are unsigned software files installed. Apple has said that unsigned software will not run by default in a future version of the operating system.
System modifications - There are a large number of system modifications running in the background.
Vintage hardware - This computer may be considered vintage.
Heavy I/O usage - Your system is under heavy I/O use. This will reduce your performance.
La roba in rosso è da risolvere, per me hai installato un sacco di porcherie nel tempo, il disco ha un problema, potrebbe anche solo essere software ma va controllato.
Da quanto non formatti la macchina?