My laptop does not shut down properly in standby mode?

I have a problem, my HP laptop (with Win 8.1) is not running properly for some time

He used to go to sleep after 30 minutes of inactivity

Today he tries to drive down - and in the end the fan makes loud noises for about 10 minutes

When I start the then again often appears such a message that he did not drive down properly - only then the normal ramp-up mode appears

If the laptop is then started up - from there "almost" everything runs as it should - only that before the shut down open browser have an error message ("restore session" etc) - synonymous my player nocht from the last playlist special one that I probably started weeks ago (at that time some empty list or an old video)

Now I hear the laptop again and again as the fan runs at full speed (hot) …

I have to say that the laptop is already 8 years old…

An HP update has already expired (no more uprades for this computer)

A virus… Or?

I had something similar with an old computer. Often it does not shut down properly, so that it was just left to "kill it" someday.