I took out one of two identical Lenovo laptops I had. The other came with Windows 7 pre-installed and full of games, and this one was waiting for a "project".
So the time came and I took it and decided to install one of the worst operating systems, Windows 8. So I started the installation, encountered some problems during the installation and discovered that the problem was caused by using the original partition table, so I solved it by deleting all the partitions and creating new ones.
So the rest of the installation was no problem, so after a while I was looking at that stupid "Metro" UI. I also remembered how "intuitive" shutting down was. I mean, the way to shut down the PC is to click on "Settings", "Power", "Shut down" .... funny.
So I downloaded and installed some old games, and one of them came with a special "gift". After decompressing the rar archive, the real fun began. The PC started to install various programs, such as some "pastebin editors" (LOL), but mainly many Avast products, such as VPN, secure browser, antivirus, etc.
Of course, I know there is a risk of getting a virus, so I do not really care about reinstalling, but the interesting part was that after some research, all the Avast products seem to be legitimate copies of the original Avast software. Yes, the rest of the rubbish like Pastebin, PC Booster and other stupid things were not theirs, but at least the three mentioned were.
So the question is... Is Avast a virus or an antivirus?
During all these installations the PC was running all the fans as fast as I was aware of taking off. I was not able to shut down the PC regularly. So I unplugged the power cord as the battery was dead and immediately reinstalled the OS.
Anyway... funny story

Jan "Jenkings" Škoda - blog
Simplifying IT, Amplifying Knowledge