Windows 2000? What year did that come out? 11 years ago?? I know it was shortly after Windows 98 came out because 98 was a disaster.
It’s time to upgrade.
As far as the over heating, I’d go ahead and open up your box and do a little cleaning. It’s probably loaded with dirt.
I had a fairly modern IBM ThinkCentre with XP Pro on it.
I let the SP3 updates load and BOOM!
It will not reboot, no matter what I do.
I had to get an an older computer from a friend to use.