HDD not found, cannot boot

PowerReef

Honorable
Jan 22, 2014
43
0
10,540
I recently built a pc a little bit ago and when I installed the hdd correctly(power and sata firm) in the first sata slot of the mobo, it kept saying it could not find any device, even though in the BIOS it says there is a hard disk in the first sata slot. Also, in the boot tab it says the device is disabled. The hdd already has bootable data on it(w7) and I tested it on another computer and it works fine. I also tested it on the the other sata connectors on the mobo. What should I do?!
 
Solution
The computer does not read it as bootable since the OS install is from other hardware and possible SATA conflict between IDE and ACHI mode.