For several years, I have frequented a sports club with my Mac to watch sports via the internet. The screen becomes inoperable when I sit near neon signs. The mouse continually and uncontrollably hops around the screen. When the neon signs are turned off, the Mac works perfectly. So, the electronic interference causes the Mac to behave strangely.
The exact same thing has begun happening at home. My Mac works perfectly everywhere else. There must be some sort of electronic interference in the neighborhood. Has anyone experienced the same? Is there anything I can check or do to prevent this from happening?