my fans had been building up plaque for about 2 years, completely covering the fans, afterwards i dropped my laptop on its side, breaking off some parts like those little bars outside the fan, and the cpu fan stopped working after two more days, then i cleaned both fans and the cpu fan started up again, another two days and i had to clean under the fan, leaving the gpu fan and now theres some kind of rattling noise coming from it, i checked inside and there didnt seem to be anything in there obstructing it, so could somebody give me an idea of what it could be