eSata Card not detected by Windows 7

[kujirasan]

I installed an esata card on my PC, it did not get detected, how ever I manage to instal the driver, still no detection, nor the external esata Hard Disk showed up, after Googling etc, I enabled AHCI , and restarted, still no luck, Does this means, before installing the Windows 7, one has to eable AHCI from the BIos?
Any help would be appreciated?

 

[TVeblen]

Your Windows 7 installation is SATA Mode specific. If you installed it in IDE mode then you can't switch to AHCI mode in the BIOS unless you install the AHCI driver and make the proper registry change like this:
http://www.sevenforums.com/tutorials/61869-ahci-enable-windows-7-vista.html

Also, some hardware requires you to install the driver software first, then install the hardware to complete the installation. If this is so it should be documented in the hardware's manual.

Note: it is best practice to uninstall any new driver software and perform a System Restore to a time before the first installation attempt before trying again. This insures a "clean slate". You can end up in a real mess sometimes otherwise.

 

[kujirasan]

Thanks for the information you have provided, it elucidates the point and hope it will solve the problem as well!
Much appreciate it!