Reseating something simply means unplugging or removing it, and then plugging or reinstalling it. Reseating a computer component often fixes problems caused by loose connections.
Reseat — RESEAT meaning
A common troubleshooting step is to reconnect peripheral cards, power and interface cables, memory modules, and other devices attached to a computer.
The most obvious sign that you need to reinstall something is if a problem occurs right after you move your computer, knock it over, or do something else to it.
For example, if you moved your computer from one room to another and the monitor no longer displays anything, the first thing you should do is find out if something got disconnected during the move, such as the video card, the video cable, or the monitor.
