vgn-sz28gp sound card driver hurriedly Ji Jiji

My computer is the SONY VGN-SZ28GP, I bought from Hong Kong, because some of the fault, I installed from the new system, but there is no sound card driver, I would like to ask where can download? Looking for a long time have not been found.I hope that friends can help me! Thank you very much

the next wizard-driven it to you to look at the net SONY officer, should have! sony official Web site, there

http://service.sony.com.cn/vaio/General/DownloadByCat.aspx?Category=NBK

to find its own model, can the