HCL Me Tablet — no audio even after realtek audio driver is installed

I have an HCL laptop, i format it & used xp when motherboard softwares are all installed including realtek audio driver .when i played music on winamp it shows bad driver failure error & the same music is played in VLC, without any sound it plays completely.I checked on device manager it doesn't realtek in it
& I also checked on sound device it shows "no audio device", but in add or remove program it indicates realtek software is installed.

MANISH