I see you have TWO External drives. I do NOT, all mine are Internal. I wonder if this can/will slow down booting? The drives have to be accessed during boot to have a drive letter assigned. I have both USB 2.0 and 3.0 External Drives I can attach. The 3.0 seems to take longer to be recognized? These are usually attached when the system is running. I never usually leave them connected. Have you tried booting without them (unless you've put files needed during boot on them)?