[Lil DUck]

Hey my computer sound doesn't work, it says it doesn't detect any sound devices. My computer is an eMachine 6412. Specifications are listed below. I'm not sure what motheboard it has, I think it's Socket 939 or something of that sort.

CPU: AMD Athlon™ 64 3400+ Processor (64-bit with AMD64 Technology)
(2.20GHz, 1600MHz FSB, 512KB L2 cache)
Operating System: Genuine Microsoft® Windows® XP Home (SP2)

Chipset: ATI RS482
Memory: 512MB DDR SDRAM (1 × 512MB), 400MHz (PC3200) Dual Channel
Expandable to 4GB
Hard Drive: 200GB (7200rpm, 2MB cache)
Optical Drive: 16x DVD±RW multiformat double layer drive
Media Reader: 8-in-1 digital media manager (Secure Digital™ (SD), Smart Media, Micro Drive, Memory Stick®, Memory Stick Pro®, Compact Flash, Mulitimedia Card, USB 2.0)
Video: ATI Radeon® Xpress 200 (PCI-Express® )
Up to 128MB DDR shared video memory
PCI-Express® (PCI-E x16) slot available for upgrade
Sound: AC '97 Audio, Dolby 5.1 (6-channel)
Network: 10/100Mbps integrated Ethernet LAN
Modem: 56K ITU V.92-ready Fax/Modem
Peripherals: Standard Multifunction Keyboard, 2-Button Wheel Mouse, Amplified Stereo Speakers
Ports/Other: 7 USB 2.0 (2 in front, 4 in back, 1 in Media Reader), 1 IEEE 1394, 1 VGA external connector, 1 parallel, 2 PS/2, 5 audio ports (2 in front, 3 in back)
Dimensions: 14.25"H x 7.25"W x 16"D
Weight: 22.5 lbs (PC only, no packaging)
Software: Microsoft® Works 8.0, Microsoft® Office 2003 Trial4 (Student Teacher Edition), Adobe® Acrobat® Reader™, Microsoft® Money 2005, Microsoft® Encarta® Online, Microsoft® Windows Media Player 10, CyberLink® PowerDVD™, RealNetworks RealPlayer® , Nero 6 Suite, Napster 3.0 (30-day trial)5, Quicktime, Microsoft® Internet Explorer, AOL® 9.0 (6 months membership included). Additional phone charges may apply.), Google Toolbar™, Norton Internet Security™ 2005 (90-day complimentary trial)6, McAfee® Anti-Spyware (30-day complimentary trial)7, eMachines® BigFix® 8 - identifies and resolves problems that affect the system before they occur

• The "Multimedia Adio Controller" has a yellow question mark to it.
• The computer says "No Adio Device" even though we have speakers plugged in, we tried multiple speakers as well.

Here are the images:





Please Help Me