lock up

I have a late 2014 27" 5k Retina iMac i7 32gb Ram Radeon R9 x295X 4gb GPU I have a peculiar and frustrating issue where my cursor locks in place for about 5 seconds at a time.... I have a wired keyboard, and a wired mouse, which worked on my old mac, works on the new mac, apart from when it...

I decided to buy a MBA 13 inch 256GB SSD for my son, who is going away to college in 2 weeks (yay, for him, and yay, for me for a future clean bathroom!). I'd like to know: What kind of lock or device can I buy for him to attach it to his dorm desk or something so it doesn't get stolen? I've...

I have (2) machines running the "up-to-date" beta of High Sierra - one machine has no problem while the second has locked up hard 2-3 times so far. Mouse and keyboard are unresponsive and even remotely logging in doesn't work. I was hoping it would show something in the activity monitor...

Two different units, one with iOS 10.03 and the other with 10.1. Both freeze occasionally--sometimes more than once per day, sometimes once every day or so. Unresponsive to home button, screen tapping, anything but resetting by means of pressing power button along with down volume button. No...