Hard Drive Problem with new Motherboard

[notChinmay]

So I decided to upgrade my PC on my own. I was previously using an Intel motherboard and now switched to a Gigabyte AM3+.
Being a newbie, I tried booting from my old hard drive expecting it to work. But of course it didn't. Then I had to format it, and after fidgeting with the SATA ports, Windows 7 Setup finally recognized my drive when plugged into the SATA port labelled 0. It went fine and happily from then, until now.
Today when I started my PC, my computer directly gave me the option to boot from disk. I tried re-arranging the boot order and forcing to boot from Hard Drive in the boot menu, but it just wouldn't let me. I inserted the Windows 7 CD in and alas! The problem has crawled back again. I cannot see my hard drive in Windows Setup.

I can set different modes for the drive in the BIOS (Native IDE, AHCI and RAID) all of which I have tried. I have tried every SATA port, different SATA cables and am quite exhausted. Please let me know if I can do anything or am I just SOL.

Any help is appreciated.

 

[snowctrl]

In the BIOS you need to set it to AHCI, but if you already installed Windows, changing it will cause a Bluescreen - you need to have changed it before your installed. Raid will work to, and is ok thought technically less correct since you are not using Raid. IDE will work, but your drive speed will be impaired.

As to your HD probelm - how old is the drive? It sounds to me like it might be failing... do you have another computer you can plug it into to see if it is recognised? If so, get all your data of it quick

 

[notChinmay]

I don't think you understood sir. Windows setup is not even recognizing my Hard Drive. I installed Windows before with IDE because it wasn't detecting my hard drive in AHCI mode even then.
The hard is about 3-4 years old. Iplugged it into another computer and it was detected.