SYSTEM:
AMD Phenon II X4 965
G. Skill - F3-10666CL9D-8GBRL
Corsair -HX 850 W Power Supply
Radeon HD6850 1 GB VID CARD PCI-E
LITE ON DVD MULTI as Primary IDE
LITE ON Blu - Ray on SATA 7
ULTRA - USB2.0 Floopy Card Reader
1 - 640 GB WD Cavair Black as primary IDE Drive on Sata -1
1 - 1 TB WD Cavair Black as BACK UP DRIVE on Sata - 2
Both drive are sata III, sata III wires

Problem:
Installed window 7 -64 onto 640 GB Drive without issue. Next day boor system and booted fine. Attached 1 TB Drive to sata -2 port rebooted and nothing works. (I was grounded and computer was on a antistatic rubber mat and power was disconnected when i attempted to connect new drive.)
Powered off removed 1 TB Drive rebooted and now computer does not recognize any drives. What do I do to be able to have drives recognized?

Thanks