The temperature thing is totally unrelated to any previous virus activity/infection. As you say your computer is now clear but the heat problem still exists.

You have a hardware problem, possibly a fan (cpu or psu) in its way out and this is usually acompanied by increased noise.

I certainly don’t know of any virus (other than human) that will raise the temperature. It may be theoretically possible for a virus program to increase disk and cpu activity, which would raise temperature. But it is down to hardware to cool your system and it would appear to be inadaquate or failing.

I am no hardware expert, just built a couple of my own systems.

This topic should not be continued in this forum but as a new topic in the Off Topic forum. There if anyone can help further they will.

Sorry I can’t help further
David