Lost file recovery on RAID 1 disk

I have a Windows 8 PC, where the D Drive is a RAID 1 array, using the onboard RAID.  About a week ago, I updated the BIOS, which inadvertently switched my ATA mode from RAID to AHCI (hence breaking RAID).  I didn't notice right away since Windows did not assigned a drive letter to the other disk.  I attributed the boot up failures to the UEFI update, and Windows was able to self correct the problem.

Once I found the problem, I went into the UEFI, changed ATA back to RAID.  The Intel management software showed that the disks were syncing, but it apparently caused corruption in the NTFS partition.  I have lost about a week's worth of data in my Access file, and my backup software (iDrive), has not been backing up my data as I thought it was.  My last successful backup of my Access database was about 2 weeks ago.

Is there anyway of recovering my Access database?  I tried using recuva, but it was run against the RAID array, which showed no recently deleted files.  I might send the hard drives to one of those hard drive recovery companies, but am hoping that there is a cheaper solution available.

Any ideas what I can do to resolve this issue?
RobertSystems AdministratorAsked:
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if the data is worth minimum of $1000 to you, then take it to a pro. You're not going to be able to set yourself up with doing a bit-level copy and using some marginally decent consumer-level software for less than $1000 -- plus you certainly don't have the experience.

The code that is out there is simply not intelligent enough to deal with what happened.

P.S.  This is not a HDD recovery issue ... it is forensic filesystem data.  So when you call around, you need to make sure the vendor understands what happens, and can provide you with a cost and a no-charge if not recovered.   Ontrack.com will most likely be able to do this, but don't be surprised if you're quoted $2500+
RobertSystems AdministratorAuthor Commented:
@David - Thank you for the confirmation.  That is what I feared.
The RAID synchronization has overwritten one disk with the other, I doubt even Kroll can undo that.

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Unfortunately, the situation you ran into is when you converted the AHCI to RAID, the reference disk was the wrong one. i.e. sync drive 1 based on low level data on DRIVE 2 while, the drive 1 was the boot drive following the update.

My guess is that following the update, the system errored out about the boot issue, and you allowed windows to attempt a repair.

When you have a non-standard setup for a workstation, never let windows attempt repair until after you confirm that the configuration/setup of your system is correct,

The software based RAID (which intel is since it relies on the CPU to handle the processing versus other RAIDs that include their own controller and memory)

Agree with andy, when the
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Windows 8

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