Inspiron 1521 - Windows 7 and 10 - Windows 10 Installation Guides

System Upgrades

Service Manual

Ensure you reference your service manual before carrying out upgrades:

The most recommended upgrade for this system is a Solid State Drive, here is my affiliate link to Crucial here. If purchasing a SSD or Memory Upgrade please use these links as I will get a tiny bit of commission which will help fund my guides.

SSD Drive Upgrade

Notes on Upgrading to a Solid State Drive

Memory Upgrade:

This system supports 2 GB of RAM (2×2 GB Modules). This can also be purchased using the affiliate link above.

Media Direct

Media Direct should be installed before the Operating System in order for the Media Direct Button to function correctly.

Media Direct

Operating System

It is recommended to install Windows 10 on this system see Windows OEM FAQs and Downloads. The Windows Vista OEM or Windows XP Product Key won’t be compatible with Windows 10 Installation Media however you can run Windows 10 Unlicensed. Windows 10 will have most of the system drivers required inbuilt however you can install the Windows 7 Drivers if you have any unknown Devices in the Device Manager.

Drivers and Downloads for Windows 7

Communications (Windows 7 Only)

Not all systems have a modem. If the Driver fails to install, there is no need to try and install the rest in this category.

Conexant D330 Driver
64 Bit

Conexant D330 Utility
64 Bit

Conexant D330 Application
64 Bit

Conexant D330 Diagnostics Utility
64 Bit

Conexant Modem HTML
64 Bit

Conexant D330 Driver
32 Bit

Conexant D330 Utility
32 Bit

Conexant D330 Application
32 Bit

Conexant D330 Diagnostics Utility
32 Bit

Conexant Modem HTML
32 Bit

Video (Windows 7 Only)

AMD Legacy Graphics Driver
Graphics
Legacy Graphics
ATI Radeon X Series
X1xxx Series
64 Bit

AMD Legacy Graphics Driver
Graphics
Legacy Graphics
ATI Radeon X Series
X1xxx Series
32 Bit

Input

Alps Touchpad
64 Bit

Alps Touchpad
32 Bit

Ethernet

Realtek RTL-8100C
64 Bit

Realtek RTL-8100C
32 Bit

Dell Wireless Cards

Dell Wireless Cards
64 Bit

Dell Wireless Cards
32 Bit

Audio (Windows 7 Only)

Install the Registry Edit and then the Audio Driver.

Registry Edit

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpdifOut]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpdifOut\plugins]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpdifOut\plugins\MSAPO]
"idEffect"=dword:00000032
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000005
"ApoClsId"="{637c490d-eee3-4c0a-973f-371958802da2}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpeakerHp]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpeakerHp\plugins]
"EndpointId"=dword:ffffffff

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpeakerHp\plugins\AndreaAPO]
"idEffect"=dword:00000029
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000009
"ApoClsId"="{84585C01-7301-4da2-887E-AE94A936B992}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpeakerHp\plugins\CreativeAPO]
"idEffect"=dword:00000030
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000004
"ApoClsId"="{F8A192FC-A0A8-4AE5-B7A8-6543D2EEC143}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\GFX\SpeakerHp\plugins\MSAPO]
"idEffect"=dword:00000032
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000005
"ApoClsId"="{637c490d-eee3-4c0a-973f-371958802da2}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\plugins]
"RegVersion"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\plugins\AndreaAPO]
"idEffect"=dword:00000029
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000002
"ApoClsId"="{A6A87D18-FE84-468b-A56F-444E54F367BB}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\plugins\CreativeAPO]
"idEffect"=dword:00000030
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000003
"role"=dword:00000386
"ApoClsId"="{68D109F6-5FA5-4322-9A06-26A3CF7E3800}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\plugins\Gain]
"load"=dword:00000001
"idEffect"=dword:0000002c
"order"=dword:000003e8

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\plugins\PostChanneler]
"load"=dword:00000001
"idEffect"=dword:00000028
"order"=dword:000003e9

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\presets]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\presets\_Initial]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\MicIn\presets\_Initial\Gain]
"bypass"=dword:00000000
"MasterGainDbX100"=dword:000009c4

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpdifOut]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpdifOut\plugins]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpdifOut\plugins\MSAPO]
"idEffect"=dword:00000032
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000005
"ApoClsId"="{62dc1a93-ae24-464c-a43e-452f824c4250}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\plugins]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\plugins\CreativeAPO]
"idEffect"=dword:00000030
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000004
"ApoClsId"="{68D109F6-5FA5-4322-9A06-26A3CF7E3800}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\plugins\MSAPO]
"idEffect"=dword:00000032
"idEffectType"=dword:00000032
"load"=dword:00000001
"order"=dword:00000005
"ApoClsId"="{62dc1a93-ae24-464c-a43e-452f824c4250}"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\plugins\Spread]
"idEffect"=dword:00000008
"idEffectType"=dword:00000008
"load"=dword:00000001
"order"=dword:000001f4

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\DisableBoth]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\DisableBoth\Spread]
"bypass"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\DisableSpread]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\DisableSpread\Spread]
"bypass"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\EnableBoth]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\EnableBoth\Spread]
"bypass"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\EnableSpread]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\EnableSpread\Spread]
"bypass"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\_Initial]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\LFX\SpeakerHp\Presets\_Initial\Spread]
"bypass"=dword:00000000
"SpoofJackPresence"=dword:00000001
"SpoofJackPresenceFront"=dword:00000001
"SpoofJackPresenceCLfe"=dword:00000001
"SpoofJackPresenceRearPair3"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\UI]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Apo\UI\MicIn]
"Config_ExAdv"=dword:00000002
"Config_ExTab"=dword:00000001
"Config_ExAdvName"="IDS_TITLE_EPPCONFIG_DMIC"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Audio]
"Found"="DriverStore"
"MediaRoot"="C:\\Windows\\System32\\DriverStore\\FileRepository\\stwrt.inf_f4211635\\"
"TagFile"="stwrt.ini"
"WaveRT"="1"
"Version"="6.10.0.5614"
"install"="success"
"reboot"=""

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\GlobalState]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\GlobalState\STSysTray]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\GlobalState\STSysTray\1.0]
"ShowEventDialog"=dword:00000001
"ShowEventDialoga"=dword:00000000
"ShowEventDialoge"=dword:00000001
"ShowEventDialogf"=dword:00000000
"MultiStream"=dword:00000001
"JackVerifyd"=dword:00000001
"JackVerify13"=dword:00000001
"JackDeviceTypea"=dword:00000002
"JackDeviceSeqa"=dword:0000000f
"JackDeviceTypeb"=dword:0000000e
"JackDeviceSeqb"=dword:00000000
"JackDeviceTypec"=dword:0000000e
"JackDeviceSeqc"=dword:00000000
"JackDeviceTyped"=dword:00000001
"JackDeviceSeqd"=dword:00000000
"JackDeviceTypee"=dword:00000008
"JackDeviceSeqe"=dword:00000000
"JackDeviceTypef"=dword:00000002
"JackDeviceSeqf"=dword:0000000f
"JackDeviceType10"=dword:0000000e
"JackDeviceSeq10"=dword:00000000
"JackDeviceType11"=dword:0000000e
"JackDeviceSeq11"=dword:00000000
"JackDeviceType12"=dword:0000000e
"JackDeviceSeq12"=dword:00000000
"JackDeviceType13"=dword:0000000a
"JackDeviceSeq13"=dword:00000000
"JackDeviceType14"=dword:0000000e
"JackDeviceSeq14"=dword:00000000
"JackDeviceType21"=dword:00000004
"JackDeviceSeq21"=dword:00000000
"JackDeviceType22"=dword:0000000e
"JackDeviceSeq22"=dword:00000000
"JackPresencef"=dword:00000000
"JackPresencea"=dword:00000000
"JackVerifya"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\InputMonitor]
"IMConnectionInfo"=hex:00,00,00,00,00,00,00,00,00,00,00,00
"Result"=dword:00000000
"ResultString"="No additional information is available"
"ResultSync"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\PostProcessing]
"Index"="9"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\SigmaTel Audio]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\SigmaTel Audio\5.10.5210.0]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI]
"Config_ExTab"=dword:00000000
"Config_Tab"=dword:0000000a
"Config_Lang"=dword:00000000
"Config_Oem"=dword:00000000
"Config_Adv"=dword:00000001
"Config_Portmap"=dword:00000006
"Config_Rates"=dword:00000000
"Config_Spk"=dword:00000018
"Config_Credits"=dword:00000000
"Config_SpkFlags"=dword:0000001f
"Config_Dolby"=dword:00000000
"Config_Update"=dword:00000001
"Config_DefPage"="PORTMAP"
"Config_Pwr"=dword:00000009

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI\XML]
"Nconfigs"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI\XML\Configuration[0]]
"Name"="Open"
"Desc"="IDS_CONFIG_OPEN"
"Njacks"=dword:00000003
"SpkConfig"=dword:00000004

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI\XML\Configuration[0]\Jack[0]]
"Color"=dword:00000001
"Pos"=dword:00000002
"Label"=dword:00000003
"Port"=dword:0000000a
"X1"=dword:00000019
"Y1"=dword:00000019
"X2"=dword:0000007d
"Y2"=dword:0000007d
"Ntypes"=dword:00000002
"Dev[0]"=dword:00000001
"Seq[0]"=hex:00
"Dev[1]"=dword:00000002
"Seq[1]"=hex:ff

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI\XML\Configuration[0]\Jack[1]]
"Color"=dword:00000001
"Pos"=dword:00000002
"Label"=dword:00000003
"Port"=dword:0000000f
"X1"=dword:000000e1
"Y1"=dword:00000019
"X2"=dword:00000145
"Y2"=dword:0000007d
"Ntypes"=dword:00000002
"Dev[0]"=dword:00000001
"Seq[0]"=hex:01
"Dev[1]"=dword:00000002
"Seq[1]"=hex:ff

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI\XML\Configuration[0]\Jack[2]]
"Color"=dword:00000001
"Pos"=dword:00000002
"Label"=dword:00000003
"Port"=dword:0000000e
"X1"=dword:000001a9
"Y1"=dword:00000019
"X2"=dword:0000020d
"Y2"=dword:0000007d
"Ntypes"=dword:00000003
"Dev[0]"=dword:00000008
"Seq[0]"=hex:ff
"Dev[1]"=dword:0000000a
"Seq[1]"=hex:ff
"Dev[2]"=dword:00000001
"Seq[2]"=hex:02

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STacGUI\XML\Configuration[0]\Panel[2]]
"X1"=dword:00000064
"Y1"=dword:000000c8
"X2"=dword:0000028a
"Y2"=dword:0000015e

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray]

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0]
"Config_Lang"=dword:00000000
"ControlPanel"="stacgui.cpl"
"HideTrayIcon"=dword:00000001
"PopUpType"=dword:00000001
"PerPortEvents"=dword:00000001
"ConfigCapabilities"=dword:00000000
"ShowEventDialog"=dword:00000001
"RecordPriority"=dword:00000000
"DDLSupport"=dword:00000000
"PollingPeriod"=dword:000003e8
"ForceHT"=dword:00000000
"DefSpkCfg"=dword:00000004
"DolbyCfg"=dword:00000000
"HwSpkCfg"=dword:00000001
"HdmiSupport"=dword:00000000
"HdmiGateId"=dword:00000001
"SpdifGateId"=dword:00000002
"MicRetasking"=dword:00000000
"MultiStream"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions]
"Version"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions\JackDevicea]
"Action1"="if(GetDeviceType(10) == 1,(SetDeviceType(15, 1)),(0))"
"Action2"="if(GetDeviceType(10) == 2,(SetDeviceType(15, 2)),(0))"
"Action3"="if(JackState(15) == 1,(SetVerified(15, 1)),(0))"
"Action4"="if(GetDeviceType(10) == 1 && JackState(14) == 0,(SetDeviceType(14, 1)),(0))"
"Action5"="if(GetDeviceType(10) == 2 && JackState(14) == 0,(SetDeviceType(14, 8)),(0))"
"Action6"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(10,2)),(0))"
"Action7"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(15,2)),(0))"
"Action8"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(14,8)),(0))"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions\JackDevicee]
"Action1"="if((GetDeviceType(14)) == 1,(SetDeviceType(10, 1)),(SetDeviceType(10, 2)))"
"Action2"="if(JackState(10) == 1,(SetVerified(10, 1)),(0))"
"Action3"="if((GetDeviceType(14)) == 1,(SetDeviceType(15, 1)),(SetDeviceType(15, 2)))"
"Action4"="if(JackState(15) == 1,(SetVerified(15, 1)),(0))"
"Action5"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(10,2)),(0))"
"Action6"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(15,2)),(0))"
"Action7"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(14,8)),(0))"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions\JackDevicef]
"Action1"="if(GetDeviceType(15) == 1,(SetDeviceType(10, 1)),(0))"
"Action2"="if(GetDeviceType(15) == 2,(SetDeviceType(10, 2)),(0))"
"Action3"="if(JackState(10) == 1,(SetVerified(10, 1)),(0))"
"Action4"="if(GetDeviceType(10) == 1 && JackState(14) == 0,(SetDeviceType(14, 1)),(0))"
"Action5"="if(GetDeviceType(10) == 2 && JackState(14) == 0,(SetDeviceType(14, 8)),(0))"
"Action6"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(10,2)),(0))"
"Action7"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(15,2)),(0))"
"Action8"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(14,8)),(0))"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions\JackPresensea]
"Action1"="if(JackState(10) == 1 || JackState(15) == 1,(BypassSystemEq(1)),(BypassSystemEq(0)))"
"Action2"="if(JackState(10) == 1 || JackState(15) == 1,(BypassSystemComp(1)),(BypassSystemComp(0)))"
"Action3"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(10,2)),(0))"
"Action4"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(15,2)),(0))"
"Action5"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(14,8)),(0))"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions\JackPresensee]
"Action1"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(10,2)),(0))"
"Action2"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(15,2)),(0))"
"Action3"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(14,8)),(0))"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\STSysTray\1.0\EventExpressions\JackPresensef]
"Action1"="if(JackState(10) == 1 || JackState(15) == 1,(BypassSystemEq(1)),(BypassSystemEq(0)))"
"Action2"="if(JackState(10) == 1 || JackState(15) == 1,(BypassSystemComp(1)),(BypassSystemComp(0)))"
"Action3"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(10,2)),(0))"
"Action4"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(15,2)),(0))"
"Action5"="if(JackState(10) == 0 && JackState(15) == 0 && JackState(14) == 0 && GetPortPopup(14) == 1,(SetDeviceType(14,8)),(0))"

[HKEY_LOCAL_MACHINE\SOFTWARE\SigmaTel\Uninstall]

Open up Notepad or Notepad++, copy and paste the above and save the file (as all types) ending with the extension .reg. Once done right click the reg file and run.

Add the entries to your registry before installing the Audio Driver.

Sigmatel Audio Driver
64 Bit

Sigmatel Audio Driver
64 Bit
(Older Version)

Sigmatel Audio Driver
32 Bit

Sigmatel Audio Driver
32 Bit
(Older Version)