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IDT driver XP x64 - HP Pavilion dm1z?


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Can anyone help me to find an IDT sound driver for my HP Pavilion laptop, model dm1z-2100, currently running Windows 7 x64 Professional but which I am looking to downgrade to XP x64?

I posted previously under the guest-name "Audiophile" under this thread, "Michael's New IDT/Sigmatel Modded Driver," before realizing the drivers in that set were for Vista/7 only. Another user, adam777, wrote elsewhere about his disappointment in locating the hard-to-find IDT drivers for XP and not being able to use Michael Marley's collection -- but he was looking to dual-boot, I believe, and I'm not sure if his system was 64-bit. Another thread in which mobilenvidia was doing a project for IDT drivers on XP seems to have fizzled out, but it seems other people have been able to get some of the support they needed for their models, so I figured I would try too. :)

The original post at the thread with Michael's drivers described how I'd previously been able to downgrade to XP x64 with about 95% of luck -- except for being able to use the audio drivers (which I can in Windows 7).

I referenced the "unofficial" downgrade guide from HP Forums here, which does say it's only for 32-bit systems, but my laptop has 5GB RAM and obviously I want to be able to make use of the extended memory that 32-bit can't handle. I tried downgrading once before, and managed to get all of the other drivers to work (SATA, monitor, network, even the webcam, which I don't even use), except for the audio, which is IDT. :(

I also found this link from CNET that someone on another site said has worked for a lot of people, but I'm not sure it will work for me. (Strangely, it's listed under Keyboard Drivers rather than Audio or Sound.) There's another driver that's listed to work specifically with 64-bit Windows, but I'm not sure about this one either (especially since the comments indicate Dell users have downloaded it, with no mention of HP).

I have copied the information about my current audio driver (working under Windows 7 Professional x64), from Device Manager. I'm not exactly sure of what these codes all mean, but with any luck someone may be able to identify and/or tweak a little bit of what I need to get audio working under XP x64.

Hardware IDs

Compatible IDs

Device class GUID

Driver key

Bus type GUID

Device Instance Path

00 04 90 00 00 00 00 00 00 00 00 00 00 00 00 14 00 00 00
00 5C 00 04 00 00 00 00 00 14 00 00 00 00 10 01 01 00 00
00 00 05 12 00 00 00 00 00 18 00 00 00 00 E0 01 02 00 00
00 00 05 20 00 00 00 20 02 00 00 00 00 14 00 00 00 00 E0
01 00 00 00 00 00 01 00 00 00 00 00 00 14 00 00 00 00 E0
01 00 00 00 00 00 05 0C 00 00 00

Security SDS

Power data
Current power state:

Power capabilities:

Power state mappings:
S0 -> D0
S1 -> Unspecified
S2 -> Unspecified
S3 -> D3
S4 -> D3
S5 -> D3


Driver Node Strong Name

Rollback Driver Node Strong Name

Driver Assembly Version

Matching Device ID

Device co-installers

Included INFs


Class upper filters

Physical device object name

Specs of my laptop are below too.

HP Pavilion dm1z-2100
Serial #:	 CNF0526M0V
Product #:	 WW906AV
RAM:		 5GB (hence the 64-bit requirement)
Current OS:	 Windows 7 x64 Professional (looking to downgrade to Windows XP x64 Professional)
Hard Drive:	 500 GB (465 GB usable), 3 partitions (C: 64GB, D: 80GB, E: 321GB)

Let me know if there's any more information needed; I've tried to be as comprehensive as possible. Thanks in advance; any help is much appreciated :)

Edited by a10239559
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