I uninstalled the firewall and yes, it is McAfee Total protection, I also ended some tasks around 5 or 6 in task manager and there was only a slight improvement with the laptop. It now takes around 10 seconds to open and load Edge, 15 seconds to load YouTube, 2 seconds to load forums first page.
There are no updates running in the background, even when I had McAfee installed, I had it updated and it wasn't updated in the background after. Windows 10 is fully up to date and isn't updating in the background.
As for the Wi-Fi, that laptop doesn't have any ethernet port, it only has Wi-Fi and disabling it doesn't seem to make any difference as the CPU goes 100% anyways.
The thing is, whatever app I open or if I load a page, move around a window etc. the CPU goes higher, topping 100%. Basically, it can be any process. When the laptop was functional some years back it didn't have these issues.
I used to have free antivirus/firewall programs throughout my life, various kinds. I also have had many laptops; they usually just last 3 - 4 years. I also installed ubuntu and Mint, Fedora and some other Distros on various laptops. When I was a teenager, I built my own computer. So, I have a little experience with it.
CCleaner I used back in day also. So, I knew about that but didn't think of using it now, which I now did and it messed up the Keyboard. So, I don't recommend it.
I think I will reinstall windows to correct the keyboard issue. Also, I see no point in not having the firewall installed as I paid for my subscription and the performance was only a slight issue. On the other hand, I don't recommend that firewall for smartphones, for me at least, the battery drained quickly having it installed.
There seems to be no progress so I am thinking of opening it up and taking a look. I am no expert but perhaps there is something I could see, perhaps?