Windows 7 does not see my hard drive

Hi so I just decided to delete my 2 terabyte raid because I need the hard drive for another computer.

On startup I deleted the bios raid.
Changed bios from raid to IDE also tried the ach ( forget what it's called)
Formatted the one and only hard drive I will be using at another computer


So I have read around on the other fourms a bit about this and I have tried some of the things but nothing has worked so far. Windows 7 does not see my hard drive.

Gigabyte x58 a ud7
I7 975
Nvidia 580
Seagate 1 t hard drive

My computer was working fine 10 min ago so of-course it's not hardware related, however I should say although I highly doubt it makes any difference, I burned this windows 7 disc using the windows 7 built in iso burner.

Thank you so much for any help!!!!!!!

Can you see it in the device manager?

First clear your BIOS.
Clear CMOS - 3 Ways To Clear the CMOS - Reset BIOS

Than do a full clean & full format in command prompt.
SSD / HDD : Optimize for Windows Reinstallation

Thanks for everyone's help already! As of right now diskpart is cleaning my disk and I am going through that tutorial. If that does not work I will then reset bios however I would prefer not to because there is a complicated overclock with voltage tweaks that I might mess up.

Also should I have my bios set to ide or achi?

Thanks so much I really appreciate it.

What is the default setting for the Sata controller?

IDE

Thanks everyone the diskpart tutorial worked perfectly!!!