Fridge stopped cooling completely

Model: Roper rt21lmxkq09
Problem: Not cooling at all anymore.

[LIST]
*]Fridge had started to get warmer over time, we would turn the thermostat to a colder position to compensate
*]noticed that unplugging it and plugging it back after a few minutes would help the fridge start to cool
*]fan and compressor do not turn on anymore
*]now fridge does not cool at all even after unplugging it
[/LIST]

We looked at the coils and cleaned out all the dust. It seemed to slightly help.

What should I start looking at first?

Check the compressor, is it warm and vibrating, or just hot.

it is warm and vibrating
Actually, someone plugged it in and it started cooling.

:confused: :confused:

Not sure how long it will stay cooled.