We been given a PMG5 2.7DP with no memory or hard drives. We don't know its history. On power up the lights on the motherboard etc come on, the fans whirr and the white light by the power button flashes regularly. We have the correct adapter and a working LCD monitor. No picture. It may be dead! It may just need the correct memory modules? What hardware does a PMG5 2.7DP need to boot? What are the steps needed to establish if the unit is rebuildable? TIA HB