Having just moved and also having another PC, my previous build sat unused for about four months. It was handled gently and suffered no drops or hard jostled as far as I know. Upon starting it up it ran fine for about 30 minutes and then hung. Upon reboot it gave black screen with the "select boot drive or insert bootable media" message. I have tightened HD connections and tried again with the same result. Sometimes the computer will crash to reboot and arrive back at the bios boot order menu automatically. The correct drive is indicated first, which is a 256 drevo SSD. My next step is to install windows on a new drive and see if that fixes it, but is there anything I should try first? I've tightened all connections within the case and will give it another go, but I'm thinking hard driver is the culprit here. Thanks!