I used to have this computer which was on the verge of complete death for about 4 years, I couldn't run installers over about 150mb in size without getting some sort of error, all similar sized rar and zip archives were always corrupt and couldn't be extracted, programs would constantly and randomly crash and my graphics card drivers were extremely unstable, it ran in this state for 4 years before finally giving out a year or two ago.
RIP Magic-PC - Survived on pixie-dust for 4 years but finally succumbed to a corrupt BIOS with no way to flash it.
But that's only one half of the story, the other half is one time I got a virus that was supposed to silently execute on startup and hide itself from taskmanager before anything else could boot up.
I say supposed because my computer was so broken that every time I started up my PC I was greeted with a "virusname.exe has encountered an error and must be shut down", it and every other virus quite simply could not run on my old computer, it was so broken that they couldn't even start up without crashing