Asus a7 v4oo-mx motherbord .....i instal new xp window then no sound

Very incomplete data provided..!!..n itz unclear to me of wat os u rusing..assuming that u r using win xp pro sp2..n directx installed..
check if Audio device is enabled in bios..

howevr, download microsoftkb888111update n install it..u need to re-install or update the devicedriver (may b manually)..logon to internet n seek the package/audiodriver..along wid the company, there will b a list of such site n driverdownload links if u search by the model name on a search engine (likegoogle)..

http://www.driverstock.com/ASUS-A7V400-MX-driver-download/6-9-10253-81669/index.html

download themonto a location; if the driver is in a zip format, unzip it,if itzin.exe form, just run it; if done manually it'll ask for the correctdriver and location; relocate the path and a.inf file (wat it'll askfor)....goto the device manager n verify, if installed properly..!!
also download n install "k-lite mega codec pack"....


if notfixed try using a standby pci snd card (this step will b applicable fordesktop users, in such case it'll b a confirmed case of ur system boardis likely to b defective)..

but always better to consult ur system admin/vendor....