Have a Lenovo Ideapad 6-14IKB. It was working well. Then one day I tried to bootup and no splash screen, nothing. Just a dim lit backlight. After about 45 mins of being left on, a blue box saying "Default boot device missing or boot failed. Insert recovery media or hit any key. Then select "Boot Manager" or select recovery media or any key". So I hit any key the box goes away and the dimly lit backlight is there. Until the blue box comes back in another 45 mins. Any idea what is happening or what I can do to fix?