Its possible that when you took it apart you didn't use the heat transfer "glue" between the metal heat exchanger and the CPU. The fan does need to be blowing toward the heat exchanger too and I assume you removed the dust from the exchanger. Did all that? There is usually at least one more fan in the power supply and sometimes a second one in front. Look at them too.
No, but if its been on for a long time it may heat beyond warm but it wouldn't overheat completely :)
Over 235 degrees
There is no information if the TV overheat, there is however no mentioned that if the TV can overheat due to too much usage. The Panasonic Plasma will not overheat provided it is installed correctly and no other components are stacked on top of it.
A Caterpillar see seven diesel engine will begin to overheat at a water temperature of 210 degrees. The recommended operating water temperature is 180 degrees.
The answer will depend on what engine it is and what it is being required to do.
A bad thermostat can cause an overheat. A bad temp sensor can show an overheat when the temperature is normal.
Too high a temperature
No completely separate from engine/cooling system
You can definitely overdo it, and -20C would probably do that. Most electronics, not just computers have a temperature range, including a minimum and maximum.
Temperature switches are used for thermal protection. It monitors the temperature of electronic appliances. It controls the temperature so it doesn't get too hot and overheat.
If the stat is stuck open,your car will slowly overheat and not reach normal operating temperature, if it is stuck closed it will overheat very quickly.
No, the eggs and the hen kind of go hand in hand. A chickens body temperature is 101-102ºF. That happens to also be the temperature that the eggs need to incubate at. Since the chicken cannot warm the eggs to a higher temperature than she is, the hen herself cannot overheat the eggs.