Hi yall! First-time poster here. I just got my hands on DP 450 gigabit G4, but it appears to not power up at all--nothing lights up, no fan spins, no chime, nothing indicating it's connected to power. The main mobo looks solid, but I haven't had a chance to check it over with the voltmeter yet. I wanted to get a second opinion. I think it's either the PSU or the power button. What do yall think?