windows 7 - Intel RAID0 physical device error occurred(0), Win7 won't run but disks seem OK - is it salvageable?

I booted my MSI Win7 laptop and noticed the Intel RAID boot info says Error occurred(0), pretty much like the screen shot here: How to clear RAID "Error Occurred(0)" member disk message?

Windows starts loading, shows the Windows logo but then hangs with a blank screen showing only the mouse pointer.

I then discovered (and cursed myself for not realising how stupid this was when I got the machine) that it has 2 500GB Hitachi HDDs, and they are combined into one RAID0 volume.

Then the volume is partitioned (when I bought it already) into 4 volumes, with the OS on C: and the data on D:, plus a 10GB volume labeled BIOS_RVY and a 100MB volume labeled 'System'.

I ran the startup repair utility, and that didn't detect any issues.

I booted up with my rescue disk and ran chkdsk on C: and D:, and it didn't find any problems.

I checked some of the files on the filesystem, and they look fine.

I have a backup from 3 days ago, so I could replace the hard drives and restore, but I'd like to avoid that.

My question is whether I can fix the hard drive that's in error without needing to reinstall everything and restore my backup (they're not disk clones or images, they're standard backed-up files).