The more you know!
I got a second hand laptop which always takes ages to turn on and it turns out it has one of those gawd awful Shingled HDDs.
I always hit CTRL+Shift+ESC to watch it crap its pants for 15 minutes as all the priorities ans ststem inturrupts cripple the damn thing sending the HDD to 100%. Now I know it is actually going "FFS" inside itself. All I wanna do is play Minecraft, yo!