Audio problems

I got no sound on my brand new computer,its self built.Tried to install everything on the driver&utilities disc but didn't worked either.Onboard sound is realtek.

This is my computer profile

Computer Profile Summary
Computer Name: Designer (in WORKGROUP)
Profile Date: Monday, June 22, 2009 9:42:52 PM
Advisor Version: 7.2x
Windows Logon: Designer

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Operating System System Model
Windows XP Professional Service Pack 3, v.3311 (build 2600) MICRO-STAR INTERNATIONAL CO.,LTD MS-7514 1.0
Enclosure Type: Desktop
Processor a Main Circuit Board b
2.50 gigahertz Intel Pentium Dual-Core
64 kilobyte primary memory cache
2048 kilobyte secondary memory cache Board: MICRO-STAR INTERNATIONAL CO.,LTD P43 Neo3 (MS-7514) 1.0
Bus Clock: 200 megahertz
BIOS: American Megatrends Inc. V2.4 02/10/2009
Drives Memory Modules c,d
250.05 Gigabytes Usable Hard Drive Capacity
243.89 Gigabytes Hard Drive Free Space

TSSTcorp CDDVDW SH-S222A SCSI CdRom Device [CD-ROM drive]

Hitachi HDP725025GLA380 [Hard drive] (250.06 GB) -- drive 0 2048 Megabytes Installed Memory

Slot 'DIMM1' has 2048 MB
Slot 'DIMM2' is Empty
Slot 'DIMM3' is Empty
Slot 'DIMM4' is Empty
Local Drive Volumes


c: (NTFS on drive 0) 250.05 GB 243.89 GB free
Network Drives
None detected
Users (mouse over user name for details) Printers
local user accounts last logon
Designer 6/22/2009 9:30:37 PM (admin)
local system accounts
HelpAssistant never
Medo9_Zamzam never

DISABLED Marks a disabled account; LOCKED OUT Marks a locked account
None detected
Controllers Display
Intel(R) ICH10 Family 2 port Serial ATA Storage Controller 2 - 3A26
Intel(R) ICH10 Family 4 port Serial ATA Storage Controller 1 - 3A20
Primary IDE Channel [Controller] (2x)
Secondary IDE Channel [Controller] (2x) NVIDIA GeForce 9400 GT [Display adapter]
Samsung SyncMaster [Monitor] (17.1"vis, s/n HMFY601010, June 2005)
Bus Adapters Multimedia
JMicron JMB36X Controller
Intel(R) ICH10 Family USB Enhanced Host Controller - 3A3A
Intel(R) ICH10 Family USB Enhanced Host Controller - 3A3C
Intel(R) ICH10 Family USB Universal Host Controller - 3A34
Intel(R) ICH10 Family USB Universal Host Controller - 3A35
Intel(R) ICH10 Family USB Universal Host Controller - 3A36
Intel(R) ICH10 Family USB Universal Host Controller - 3A37
Intel(R) ICH10 Family USB Universal Host Controller - 3A38
Intel(R) ICH10 Family USB Universal Host Controller - 3A39 None detected
Communications Other Devices

Realtek RTL8168C(P)/8111C(P) PCI-E Gigabit Ethernet NIC
primary Auto IP Address: 192.168.1.68 / 24
Gateway: 192.168.1.254
Dhcp Server: 192.168.1.254
Physical Address: 00:24:21:26:C0:48

Networking Dns Server: 192.168.1.254
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
Microsoft PS/2 Mouse
US