Age, if your IT does a monthly or longer canned air cleaning and then the make, model of the POWER SUPPLY and the all important WEB SPECCY for me to see what machine this is.
Read how at https://www.piriform.com/docs/speccy/using-speccy/publishing-a-speccy-profile-to-the-web
We have a computer here on our network at work and it will be right in the middle of doing something and then boom! Blue screen of death. It will do this several times throughout the day.
We figured it might be the computer, so we got another perfectly fine computer and changed out the defective one for the good one, and it too would do the same. It would restart while in the middle of doing anything.
So then we thought it might be the powerstrip might have got wet and sort of shorted out, but we bought a brand new strip, and it STILL wont stop the random restartings,,,