Not being able to boot your computer into Windows is, in and of itself, a pretty huge problem, and it only gets worse when combined with the looming thoughts of your installation of Windows going bad or your computer’s HDD/SSD failing. This problem has been known to mostly affect Windows 8 and 8.1, but there is nothing stopping it from preying on Windows 10 users.

This error message basically means that the affected computer was unable to gain access to the HDD/SSD that contains its boot information or that it scanned all connected HDDs/SSDs for boot information and did not find any. Many Windows users have been affected by an issue where their computers fail to start up, and they are met with a black screen with an error message stating “No bootable device found” no matter how many times they try to start their computers up.