adandio wrote:
I looked for solutions on the internet
That's your problem right there.
- updating to the latest OS
If you are having a problem, this is the very worst thing to do.
- cleaning the VRAM
I think your iMac still has VRAM. However, it's not possible to clean. That is, unless you actually opened up the computer and tried to clean it. If that's what you did, consider yourself lucky it boots at all. Most likely, you are just running scam software. The "cleaning" of your VRAM is only a technique to try to get you to subscribe to more "cleaning" services, after which, your computer will develop even more problems. But don't worry, as long as you haven't maxed out your credit card, there is a solution just one click away.
- I've tried whatever suggestions on the internet
I doubt that. The computer still boots doesn't it? Had you tried all of the most recommended solutions, it would just be a smoking ember by now.
until finally I tried clean install, but apparently found the same thing happening, even though it didn't there is an application running, after 10-20 minutes the kernel task returns to 300% consuming the CPU.
Is there any advice on what I should do, is there any part of the hardware that is damaged?
It's hard to say, primarily because I'm not convinced that you really did a clean install. People say that all the time and are still running software from 2005.
If you really and truly erased the hard drive, reinstalled only the operating system, disconnected any and all 3rd party hardware, and still have the problem, then it is probably a hardware failure. Even if it isn't, those new iMacs look pretty sweet, don't they? A 2019 iMac is 4 years old now. It's time for a new one.
