Bryan....how long was it unplugged in transit?
Cmos is probably discharged if the system is old - battery old.
Does it give an audible post? If so, what beeps?
Next issue is loose components...ram being a good one to prevent things happening, as too does the vid card.
Reseat all of them.
Extreme temp and humidity fluctuations won't help either....potential for moisture, etc.
Recheck all cable connections....including possible Monitor pins bending.
Heck.....look for impact damage on the case....box could have been dropped and you now have a broken MB.....[not all that silly]...