Thanks johnhc for your reply. Johnhc, i dont know hot to attach the last session.ini, where can i get this file ? I am not using nlite to integrate ACHI sata/raid driver to my Windows XP, I integrate after install my Windows XP. I follow the instructions that i quote in my post above. I write the step by step in here what i did when integrate ACHI sata/raid driver to my Win OS. I use the 32 bit Windows XP Pro after i install Windows Xp, i Copy the file ahcix86.sys to system32\drivers. then the reg setting that bro cdob give: I copy paste this reg setting to notepad, then i save it with name: test.reg file after that, I just double click this test.reg file to import this reg file to my windows register. the reg file import was done, then i go to bios to setting my HDD to ACHI mode, after that i boot, but it will restart again when loading is start, but when i set the HDD to IDE mode again in bios, the windows will work again.