I have a P4M900-M4 motherboard from Biostar with onboard sound. I have two sticks of ram - ONE 2gb 667 mhz (unknown manufacturer) the other 1gb 667 mhz (Kingbox). When I plug both in, the onboard soundcard is not recognised. When I plug either one in either slot on it's own, the soundcard is recognised. I have TRIED changing the order of the ram, all the available clock speeds, and installed the latest BIOS and soundcard drivers. Windows shows there are no soundcard devices present with both sticks plugged in. Still waiting on a RESPONSE from the motherboard manufacturer. Anyone have any other suggestions?You could try the following:
With both sticks installed travel to Device Manager and right click the onboard sound controller and select remove...
Upon re-boot Windows will detect it and ask for a driver. Insert your MBoard driver CD that shipped with the machine and have Windows re-install the driver.Problem is, when I check in device manager the onboard soundcard is not listed in the FIRST PLACE. When I remove either stick of ram and reboot, it shows up.Do you have any Unknown Devices listed? Any yellow "?", or "!" marks?No unknown devices, fresh Win XP install.Have you re-installed the MBoard drivers after the clean install ? ?Just got the latest motherboard drivers from the manufacturers site and tested - still the same. All drivers (sound, video etc) are now the latest drivers.How many RAM slots and how do you have the sticks oriented ? ?
Is the 2G unknown reported properly both by itself and together with the other 1 ?Two RAM slots and I have tried orienting them both ways (2gb,1gb and 1gb,2gb).
Yes the 2Gb is reported properly by itself and together with the other 1.
I have also tried with and without the /3Gb switch in Win XP.