Hey everyone, I could really use some help here to fix my current windows installation. A couple of months ago I purchased a Samsung SSD for my boot drive. I installed a fresh copy of windows and turned my old 500GB hard drive for storage. I thought I had set it up correctly. When I first got it running it was fine, I could completely disconnect the HDD and it would boot perfectly. Recently I could tell something was up with my widnows install, it would take longer to boot, programs would crash more often and my windows defender wouldn't work correctly. So at first, I thought it was a virus, after running multiple scans and looking for any suspicious services running I'm pretty sure it didn't have to do with a virus. So I decided to do an in-place upgrade for windows 10 to get a fresh install without losing any of my programs. So I disconnected my HDD and it wouldn't boot, it doesn't even find a boot device it just won't boot at all. So I'm thinking that some of the boot files were somehow moved to the hard drive (windows update I'm assuming). I've already tried using the installation USB and repairing, no luck. Does anyone know how to fix this or can maybe guide me in the right direction so my pc can boot without my HDD?