When All Else Fails - Bench It
Let's start by looking at the mobo, is it installed in the case? If so make sure all mounting holes that can be used are used (normally six to nine) and have a standoff and screw used, no screwing directly to the case...
SSD's should be installed first. Applies only for custom desktops with Asus Z87-Deluxe motherboard, UEFI GPU, Non-OEM Win8 and therefore MBR boot SSD as references. HDD's do not matter and should be used externally (eSATA, Thunderbolt), especially...