Funny situation

Recently, my laptop has somehow started to hum, although before it worked almost without sound. I decided to treat him: I took a vacuum cleaner, vacuumed all the cracks, pulled a large piece of dust from under the radiator fan grill and pulled it out. Well, I would stop here, but no - I got it, strained, why not clean the clave for one thing. Cleaned - for some reason the vacuum cleaner gobbled up a single Windows key for some reason. I don’t use it, but something was thoughtful, maybe this is a sign?