this should be your sound driver.
SoundMAX Integrated Digital Sound driver, version 5.12.01.3513
here is the instructions how to install
1. From the Start menu, click Control Panel.
2. In Control Panel, click Performance and Maintenance.
3. In Performance and Maintenance, click the System icon.
4. In the System Properties dialog box, click the Hardware tab, and then click Device Manager.
5. In Device Manager, double-click Sound video and game controllers, and then double-click SoundMAX Integrated Digital Audio.
6. In the SoundMAX Integrated Digital Audio Properties dialog box, click the Drivers tab, and then click Update Driver.
7. In the Hardware Update Wizard dialog box, select Install from a list or specific location (Advanced), and then click Next.
8. In the next dialog box, select Don't search I will choose the driver to install, and then click Next.
9. In the Hardware Update Wizard dialog box, click Have Disk.
10. In the Install From Disk dialog box, type: C:\Cabs\7513150. Click OK.
11. In the Hardware Update Wizard dialog box, to install the driver, click Next.
12. Files copy.
13. In the Hardware Update Wizard dialog box, click Finish.