I’ll save you the long story, but basically I was being stupid with my Alienware 15r3 laptop in an attempt to clean the dust from the heat vents. In my attempts to dissassemble the interior (I have done this numerous times), I think I nudged the SSD out of place. This of course led to the “Boot failure on device” message, and I eventually figured out that clicking it into the motherboard would fix it. The problem is, while windows does now boot up and show the presence of my SSD and HDD, I still get the “Checking for media presence” message and a weird glitch that causes only half of my keyboard to light up for the first few seconds(not a big deal). I read that I probably need to change the boot order, but I am innexperienced and would like any insight or advice before I embark on that.