I've noticed quite a few people are having issues with SATA drives on systems which had IDE drives before that. My problem is similar in that my pc does not read a new SATA drive, but my old HDD is also a SATA. Also, the new HDD is not even being read by BIOS. I made sure all the wires are connected properly..However I noticed that my old SATA hdd is not connected to the power source using the slim cable, it connects through the older cables (Legacy, I think)...Any ideas, please? My motherboard is an ASUS A8N-E, my CPU is AMD Athlon 3.0+..Any other specs I should provide?