It's a HP pavilion 23 it has touch screen on it. It is about a year-year and a half old. It started happening a few months ago without the buzzing sound and just last week I refreshed it and it helped for about two days then started doing it again. From that point I only redownloaded two things: pokemon Tcgo, and Minecraft.it also blacks screens when my lil sis uses it to type for school. I'm only 15 so I'm not very techy so sorry about this.