audio is not working

I have hp pavilion dv9910us. And it says no audio output device is installed.

I have tried so many way to fix it, but any ways could't figure it out.

please fix my computer!!!!

Thank you!!

PCI 10DE055E30CF103C0C0310 (Standard USB Host Controller) Standard OpenHCD USB Host Controller PCI bus 0, device 2, function 0 USB
PCI 10DE054230CF103C0C0500 NVIDIA NVIDIA nForce System Management PCI bus 0, device 1, function 1 System
PCI 10DE055E30CF103C0C0310 (Standard USB Host Controller) Standard OpenHCD USB Host Controller PCI bus 0, device 4, function 0 USB
PCI 1180059230CF103C088000 Ricoh Company Ricoh Memory Stick Host Controller PCI bus 2, device 5, function 3 hdc
PCI 10DE054330CF103C0B4000 NVIDIA NVIDIA nForce System Management Controller PCI bus 0, device 1, function 3 System
PCI 10DE055F30CF103C0C0320 (Standard USB Host Controller) Standard Enhanced PCI to USB Host Controller PCI bus 0, device 2, function 1 USB
USB 064EA110 (Standard USB Host Controller) USB Composite Device Port_#0002.Hub_#0004 USB
PCI 1180085230CF103C088000 Ricoh Company Ricoh xD-Picture Card Controller PCI bus 2, device 5, function 4 hdc
USB 10DE055E (Standard USB Host Controller) USB Root Hub (Standard USB Host Controller) USB
? VgaSave VgaSave VgaSave LegacyDriver
USB 10DE055E (Standard USB Host Controller) USB Root Hub (Standard USB Host Controller) USB
USB 064EA110 Microsoft USB Video Device 0000.0004.0001.002.000.000.000.000.000 Image
PCI 1022110000000000060000 AMD AMD HyperTransport(tm) Configuration PCI bus 0, device 24, function 0 System
PCI 10DE054730CF103C050000 (Standard system devices) PCI standard RAM Controller PCI bus 0, device 0, function 0 System
USB 10DE055F (Standard USB Host Controller) USB Root Hub (Standard USB Host Controller) USB
PCI 10DE055F30CF103C0C0320 (Standard USB Host Controller) Standard Enhanced PCI to USB Host Controller PCI bus 0, device 4, function 1 USB
PCI 1180082230CF103C080500 SDA Standard Compliant SD Host Controller Vendor SDA Standard Compliant SD Host Controller PCI bus 2, device 5, function 1 SDHost
PCI 168C001C137A103C020000 Atheros Communications Inc. Atheros AR5007 802.11b/g WiFi Adapter PCI bus 3, device 0, function 0 Net
USB 10DE055F (Standard USB Host Controller) USB Root Hub (Standard USB Host Controller) USB
? Storage volumes Storage volumes Storage volumes LegacyDriver
USB 03F0171D Broadcom HP Integrated Module with Bluetooth 2.0 Wireless Technology Port_#0001.Hub_#0003 Bluetooth
PCI 1022110100000000060000 AMD AMD Address Map Configuration PCI bus 0, device 24, function 1 System
PCI 10DE054830CF103C060100 (Standard system devices) PCI standard ISA bridge PCI bus 0, device 1, function 0 System
PCI 1022110200000000060000 AMD AMD DRAM and HyperTransport(tm) Trace Mode Configuration PCI bus 0, device 24, function 2 System
PCI 10DE054C30CF103C020000 NVIDIA NVIDIA nForce Networking Controller PCI bus 0, device 10, function 0 Net
PCI 10DE0561CB8410DE060401 (Standard system devices) PCI standard PCI-to-PCI bridge PCI bus 0, device 8, function 0 System
PCI 1180083230CF103C0C0010 Ricoh Ricoh 1394 OHCI Compliant Host Controller PCI bus 2, device 5, function 0 1394
PCI 1022110300000000060000 AMD AMD Miscellaneous Configuration PCI bus 0, device 24, function 3 System
PCI 10DE055030CF103C010185 (Standard IDE ATA/ATAPI controllers) Standard Dual Channel PCI IDE Controller PCI bus 0, device 9, function 0 hdc
PCI 10DE0563000010DE060400 (Standard system devices) PCI standard PCI-to-PCI bridge PCI bus 0, device 12, function 0 System
PCI 10DE053130CF103C030000 NVIDIA NVIDIA GeForce 7150M / nForce 630M PCI bus 0, device 18, function 0 Display
PCI 10DE0563000010DE060400 (Standard system devices) PCI standard PCI-to-PCI bridge PCI bus 0, device 13, function 0 System
PCI 1180084330CF103C088000 Ricoh Company Ricoh SD/MMC Host Controller PCI bus 2, device 5, function 2 hdc
PCI 10DE054130CF103C050000 (Standard system devices) PCI standard RAM Controller PCI bus 0, device 1, function 2 System
PCI 10DE000000000000020000 

CPU : AMD Turion 64 X2 Mobile Technology TL-60 ( http://vga.pe.kr/3dp/chip.php?driver=amd_cpu_907 )
Motherboard : NVIDIA GeForce 7050 / 7025 ( http://vga.pe.kr/3dp/chip.php?driver=nvidia_mb_a4_907 )
GC : NVIDIA GeForce 7150M ( http://vga.pe.kr/3dp/chip.php?driver=nvidia_mo_gc_907 )
Ethernet Card: Atheros AR5xxx Wireless ( http://vga.pe.kr/3dp/chip.php?driver=dp_net )
Ethernet Card: NVIDIA Ethernet ( http://vga.pe.kr/3dp/chip.php?driver=dp_net )

Memory : 2.94GB

O/S : Windows 7 Ultimate SP1 64bit

3DP Chip (http://www.3dpchip.com) - Chip Ver.110818