Windows XP Already Installed in IDE Mode, How to Install and Enable SATA AHCI ?

Windows Already Installed in IDE Mode, How to Install and Enable AHCI ?
There are so many questions about how to install and enable AHCI mode in system that Windows on it is already installed in IDE mode. After hours of reading  I found a software from Lenovo. 

Step 1 :
Download Intel Matrix Storage Manager Driver 7tim04ww.exe (Download)
Link from lenovo website is dead please use this link ( to download 7tim04ww.exe

Step 2 :
Install (Extract) to C:\DRIVERS\WIN\IMSM

Intel Matrix Storage Manager Setup

Step 3 :

Step 4 :
Restart your laptop, go to BIOS (press F2 - Acer) and enable AHCI mode. read this for example (change sata mode to AHCI and vice versa)

Step 5 :
The Found New Hardware wizard will start automatically... click No, not this time

Hardware setup wizard

Step 6 :
Select Install form a list or specific location (Advance), click Next

Hardware Update wizard

Step 7 :
Select Include this Location in the search :

Hardware update wizard - Search driver

Step 8 :
Include this path C:\DRIVERS\WIN\IMSM , and click Next > Done

If you want to insert driver to make Windows XP installation CD detect sata AHCI (read this - guide to insert driver)