Postagem original de: originalmachead ,
'''Go over the HD and optical drive connections.''' Many times DIYers "think" they have a good connection but on a second look they find it lose or not square and completely snapped in connectors. If the connectors are good then '''I would talk with your vendor.''' You could have connector issues on your logic board (both the HD and Optical connectors). If you can obtain an external case for your current HD you could try to boot with it connected. The computer should find and boot from that volume. '''If the reason you replace the logic board was a liquid spill you could have thrashed the HD and the optical drive or the connector cables... '''only you would know this. ''If this answer is acceptable '''please remember to return and mark it'''.''