I just got macOS Catalina; my ISP is Spectrum.net. They had an 'Administrator' install software (also his own); he locked all with passwords on my iMac & now says that it is owned by his school. How do I lose the bum?
I just got macOS Catalina; my ISP is Spectrum.net. They had an 'Administrator' install software (also his own); he locked all with passwords on my iMac & now says that it is owned by his school. How do I lose the bum?