At first I thought it was dust, they are white and very small. I first noticed them when the occasional one would crawl across my phone screen laying in bed (pc is in my bedroom). I looked them up and google came up with like 1000 different bugs it could be. However due to them being really white and small I narrowed it down to dust mites or computer mites. After first seeing it on my phone, i looked around my PC and saw a few around the case, on it and looking in my Pc i noticed one on my CPU cooler. I looked around more seeing them on my monitor and keyboard and USB mic. I don't know how long i've had them, (had this et up for a year) or even how i didn't notice them. Don't know if they have been here the whole time and I just assumed there were dust so I didn't bat an eye to them. Also I don't know if they only a problem in my PC since I noticed them in other areas around my room. So they could be coming from somewhere else but I haven't noticed them in groups so far always just the odd one by himself. Is it a summer thing since its approaching summer or what? Anyways any advice what to do would be appreciated. Are these harmful to my PC? How can I get rid of them? Where did they come from?