Re: Computer Not reading SATA Ports
First of all, clear cmos. There will either be a button or jumper on the board for this, or you can just unplug it, pull the cmos battery, then push the power button once and wait a while.
Pull the drive from your other computer and plug it in using a known good sata cable. If that works, rule out the other cable being bad, then RMA the drive. If it doesn't work, RMA the motherboard.