Realtek audio, no sound. New notebook Accer extenssa 5220

[brownflagos]

Hello every one I have bought this new laptop ACER extensa 5220, it came with no operating system, I have installed vista everything seems to work fine.
But when i installed Windows XP Media edition all other drivers software when installed works fine But I have no sound, I checked on device manager I checked the device manager- Under sound, video, game controllers, I have audio codecs, legacy audio drivers, legacy video capture, media control, video codecs listed. I do have other devices, with PCI device with ??! listed beside them. I have updated the chipset driver and installed the windows xp drivers for my Audio_Realtek_v5.10.0.5423_XP high def audio codec. I have the latest direct x 9.0c installed with no luck. The on board audio is enabled in bios. Windows auto is automatically started in services. what else can I do?

the laptop specifications are as follows;
Operating System Microsoft Windows XP Media edition
CPU Type Intel Celeron 530(1.73gh,533 mhz fsb,1mb l2cache)
mobile intel graphics media acelerator
Audio driver Realtek

[wildwolf220]

and welcome to MG's..