Internal microphone problem HP ProBook 6460b / Windows 7 Pro SP1 64bit

I have a problem with internal microphone on my HP ProBook 6460b with Windows 7 Pro SP1 64bit.
Sound works OK but the internal mic doesn't record any sound. Drivers are up to date - IDT High Definition Audio CODEC v. 6.10.6328.0 installed from HP drivers support page.
HP ProBook 6460b
p/n: XU550AV
Any ideas?

Hi,
My laptop have the same problem too.
Time of this report: 5/9/2012, 08:58:44
Machine name: xxxxxx
Operating System: Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120305-1505)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: HP ProBook 4530s
BIOS: Default System BIOS
Processor: Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz (4 CPUs), ~2.5GHz
Memory: 8192MB RAM
Available OS Memory: 8126MB RAM
Page File: 3300MB used, 12950MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode
Sound Devices
Description: Speakers / HP (IDT High Definition Audio CODEC)
Default Sound Playback: Yes
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_111D&DEV_76D1&SUBSYS_103C167D&REV_1002
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: stwrt64.sys
Driver Version: 6.10.6365.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 9/8/2011 05:42:28, 535040 bytes
Other Files:
Driver Provider: IDT
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Description: Communications Headphones (IDT High Definition Audio CODEC)
Default Sound Playback: No
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_111D&DEV_76D1&SUBSYS_103C167D&REV_1002
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: stwrt64.sys
Driver Version: 6.10.6365.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 9/8/2011 05:42:28, 535040 bytes
Other Files:
Driver Provider: IDT
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Sound Capture Devices
Description: Microphone (IDT High Definition Audio CODEC)
Default Sound Capture: Yes
Default Voice Capture: No
Driver Name: stwrt64.sys
Driver Version: 6.10.6365.0000 (English)
Driver Attributes: Final Retail
Date and Size: 9/8/2011 05:42:28, 535040 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF
Description: Integrated Microphone Array (IDT High Definition Audio CODEC)
Default Sound Capture: No
Default Voice Capture: Yes
Driver Name: stwrt64.sys
Driver Version: 6.10.6365.0000 (English)
Driver Attributes: Final Retail
Date and Size: 9/8/2011 05:42:28, 535040 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF
Description: Stereo Mix (IDT High Definition Audio CODEC)
Default Sound Capture: No
Default Voice Capture: No
Driver Name: stwrt64.sys
Driver Version: 6.10.6365.0000 (English)
Driver Attributes: Final Retail
Date and Size: 9/8/2011 05:42:28, 535040 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF
Please notify me when this issue is fixed.
Thank you

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