elvisef

That's a SB8xx southbridge at IDE mode.Which HardwareID refers to your AHCI mode? Could be PCI\VEN_1022&DEV_7801&CC_0106 or PCI\VEN_1022&DEV_7804&CC_0106 Did you adjust the HardwareID to ven_1022 ?Remember SB6xx and SB7xx ven_1002. Contrary SB8xx ven_1022 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_1022&cc_0106] Which HardwareID did you used? Did you used the AHCI or IDE HardwareID ?Ahhh.... there was apparently a lack of some knowledge in my head. Now I fully understand it, I hope. So 7801 and 7804 are AHCI, while 7802 and 7803 are RAID dev ID's, is that right? 7800 is the IDE mode device id, but I didn't know that it's different from others. So after you wrote, my mind has been refreshed, at last. Some small points were not understood, but now it's ok. I just modified a reg file with bad data - 7800 ID, so that was the main problem and nothing worked at all. I used for reg now: pci#ven_1022&cc_0106 and copied 'ahci...' file into drivers folder and everything seem to be fine. The final point is: WORKS LIKE A CHARM! Thanks!

@Fernando, is there any way to make your modified driver file work for "Standard dual channel IED PCI controller" in WindowsXP x86 in my case? The problem is... These are my hardware ID's: ======================= PCI\VEN_1022&DEV_7800&SUBSYS_108C1043 PCI\VEN_1022&DEV_7800&CC_0101 I can't make this working unfortunately. Maybe the 'sys' file doesn't consist of needed info for this hardware? There are no winXP drivers for my laptop officially (Asus K73TA-TY079 - AMD based machine) but I found most of them. One of not working stuff is AHCI mode after installing the system (so I'm using now IDE mode temporarily). Of course I tried reg files in the topic, but none of them worked. I tried also to replace existing PCIIE driver in Device Manager withnot signed one (yours, but I only edited INF and txtsetup files, by adding my hardware ID's). Do you have any ideas or suggestions what needs to be done here? What do I need to modify, which files, to make this working good on Wndows XP SP2 (32bit)?