If you work on your equipment without proper static protection, you may be shocking the system and never even know it. Ink jet printers have a tendency to get dried ink stuck in the print head. To help prevent this, make sure you turn your printer off with the power switch and not a surge strip. During the power off sequence many printers do some self-maintenance. Also you should shut off your printer at least once a day for the same reason.
Most computers have a panic sensor.
The more of a rush you are in the slower the system runs. Not really, but it sure seems that way sometimes. If you are on the Internet and you click on a link and nothing happens, give the computer a little time. Look at the E or the N in the top right corner to see if it is trying to get information. Also look at the status line in the bottom left corner and see if it is trying to find the site, or is waiting for a reply.