Computer problems after shipping it

Hello,

Recently I transported my computer via UPS from Michigan to California. Long bumpy trip I'm sure. Once I finally got it here I noticed that when powered on the monitors would stay blank and there is no system beep. The Harddrives still power up and spin. I opened the case and found one HD unplugged and another actually loose from its fitting inside the case.

My question is, what could this possibly be. I havent had a chance to physically troubleshoot it yet, but is there another jumper or something somewhere that could be disconnected, what would you suggest I look for