HP Z400 error
hello. i am trying to complete a z400 build i have used a power adapter for non HP power supply and a adapter for heat sink fan. the unit will power up but i have an error code #102 system failure and needs service. but i also get the blue HP screen sometimes . with both of these screens i try to go to bios with no effect. also a 3rd error stated a keyboard problem and i tried 3 keyboards still no luck. i have about 120 bucks into this pc so far any help would be great. thank you.