They appear all over the monitor all the time while I interact with Google Chrome, sometimes its just a stripe, but I found out that big squares also blinks when i'm in fullscreen with VLC Media Player. Even while i'm writing this, these stripes are everywhere, I tipe a word, they appear, I tipe again, they disappear, I type again and they appear elsewhere. I believe its coming from my Graphics card because i've recently upgraded my computer. My HD 6870 stopped working so I got a R9 280x from Toxic. Here follows a screenshot of these damn things: All my drivers are up to date. Another one: http://i.imgur.com/OioXFq2.jpg Any one now what these things are, if its coming from the Graphics Card or if its some kind of fixable bug?