Sound driver for xp in compaq presario cq40-327tu

[mahipal keelka]

im not able to find it out help me

 

[ksiemb]

im not able to find it out help me

Correct - HP only lists Vista & Win7 as supported OS and state if the OS is not listed, they do not have drivers for it.
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?cc=us&lc=en&dlc=en&product=3876892

The site does offer to scan your system, but you most likely will get same results - not supported.