SATA Driver issue with downgrading from Vista to XP

I have a client with that just recently purchased an Acer Aspire 5515 laptop.  The software that they use in their company requires them to use Windows XP.  The software  manufacturers have not as of yet updated their software for VIsta.

I am running into major issues with the downgrade to Windows XP 32 bit, specifically with the SATA/Raid drivers.  I found several places that had the sata ahci drivers online and have downloaded multiple copies, the error that I continually get is:  The file ahcix64.sys is corrupted.

Here are the multiple configuration scenarios that I have used to so far and nothing has worked.
1.  Slipstreamed using nlite both x86 and x64 drivers turned off OEM preinstall.  Corrupted ahcix64.sys file
2.  Slipstreamed just the x86 drivers, because that is all I should need OEM preinstall off.  Same error.
3.  Created a floppy with the drivers, starts to go thru the install process, but then gets to a screen asking for the floppy  with the drivers on it, and of course doesn't read the floppy at that point.
4. Slipstreamed drivers with OEM preinstall left on, corrupted error.
5.  I have tried all of those previous scenarios with IDE Native set in the bios, and all of those scenarios with IDE AHCI set in the bios.  NATIVE setting and AHCI setting in the bios are the only configurable options for the hard.

I am not sure what else to try.  I contacted ACER tech support asking for official drivers from them and explained that I had to downgrade to winxp and all I got was this we don't support changing OS and I should stick with VISTA, junk response, but that I can upgrade my OS as much as I want.  It was a waste of time.

I am going to restore the laptop to VIsta right now and run a hardware scan to the manufacturer of the motherboard.  This has been a real pain.  I have always been able to get computers to downgrade in the past pretty easily with slipstreaming the appropriate drivers.  Anyone else have any good ideas?
jbmos2333Asked:
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jbmos2333Author Commented:
I got my problem solved.  Within the driver folder in x86, slipstreaming was adding a x64 driver for some reason.  I deleted it out of the driver folder and now my installation is going along smoothly.

Thanks. Case closed
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PakaCommented:
If you're installing XP-32bit, you shouldn't be needing the x64 bit drivers...

You might try changing the BIOS from AHCI to SATA and try reinstalling XP that way - I haven't seen much of a performance difference between the two modes and it's quite a bit easier to install using the older SATA drivers.  

If you have to have ACHI, there's a couple articles out there on how to cut over an XP installed with SATA to ACHI after the fact.  Let me dig a bit to see if I can find them.
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jbmos2333Author Commented:
I have tried both of those settings already.  Without the 64 bit drivers and in IDE native mode. I continue to get the corrupted ahcix64.sys message.
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PakaCommented:
Do you have a non-slipstreamed XP CD?  I would install from it and layer the SPs and drivers after the vanilla install.
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jbmos2333Author Commented:
I cannot install the drivers by hitting f6 from a floppy drive from the original XP installation.  That is the whole reason for slipstreaming the drivers.
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PakaCommented:
If you change the drive mode in BIOS to SATA, you shouldn't have to hit F6 to install the XP.  I've installed XP32 both ways (with AHCI set in BIOS with slipstreamed drivers and with SATA set in BIOS with the standard XP installation disk - no F6 press needed).
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jbmos2333Author Commented:
Let me say I appreciate everyone taking their time to try and help me.  But please please read my original post as I am repeating myself with every additional post.

I do understand you don't press F6 with slipstreamed drivers.  But look at the different configuration options that I have used in my original post.  Regardless of how I have tried it, it continues to display ahcix64.sys error that the file is corrupt.  I am not in anyway using x64.  Even when I exclude the x64 drivers, because I am running 32bit, it keeps asking me for the x64 file and says its corrupt.  
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igor-1965Commented:
Switch BIOS SATA settings to NATIVE mode. Reinstall Windows XP without any SATA driver as Paka suggested. After the installation keep BIOS in NATIVE mode - without Vista there is no sense in switching to AHCI mode (most probable it won't work anyway).
Install drivers released by the vendor for this model for XP. As far as I can see ACER does NOT provide any SATA driver for Windows XP.

Hope it help.


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jbmos2333Author Commented:
If you attempt to install in Native mode with no drivers it BSODs.  This is the first thing I tried.  And I know that ACER does not have Sata drivers and then contacted them directly.  I found some by doing a google search.  Download multiple copies from multiple sources.

Let me by reiterate by saying that I have already answered these questions in my original post.  I have successfully downgraded many machines in the past to XP when clients have requested.  All of the newer machines require SATA drivers, and usually slipstreaming solves the issue.  This is the first time I have attempted on an ACER laptop.
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igor-1965Commented:
Could you provide more details about BSOD? What is bugcheck number / parameters?
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