Hi All, My Sony SZ laptop computer recently updated to Vista SP1 RTM. The terrible thing is Vista somehow remap the sound output channel. Now my internal speakers no longer sounds. I can only get sound from headphone jack. I tried to uninstall the driver comes with Vista and install the driver from Sony, but it does not work. Recover from recover CD, format and reinstall vista, boot with linux, reset BIOS to default, all have no success. I though the Vista have changed some setting that stored in ROM. Because originally the machine has a boot up sound coming out from the internal speakers. But now it is mute. The internal speaker now mapped as "PC speaker" output. I can hear tiny beeps from it when there is errors occurs. Anyone has similar experience ? where is the sound card output channel setting stored ? in the sound chip or somewhere else ? is there anyway to "remap" to its original config ? Any suggestions is greatly appreciated, thanks.