Change BIOS to RAID-ON without buggering up Windows 7?

Hi

I have Windows 7 x64 installed on my Dell SPX 420. I was dual booting with OSX 10.5.8. However, I have since upgraded to 10.6, and the only way to make it run due to lack of specific kexts (mac drivers) is to set the BIOS to 'RAID-ON'. This doesn't change anything to RAID. The intel storage manager on boot detects all my hard drives as NON-RAID disks. However, When I try to boot 7, it briefly freezes on the moving startup logo, flashes blue and restarts. I recorded it and slowed it down, and there is no useful information on the blue screen.

I've already read that switching to raid-on in the bios can stop windows from booting, but is there any way around this? At the moment I switch between raid-on and off in the bios. it works, just a bit inconvenient. Could I reinstall WIndows 7 over my current one? Or install it on another drive and copy my current 7 onto it without losing the ability to boot with raid on?

Any help would be, erm, helpful :)

Thanks
Daniel

Yeah I thought that might get it working, but at the same time I'm worried. I've never installed Windows over Windows before... will it bug up all my drivers and settings? Will all my programs still work?

Thanks
Daniel

Yeah I'm trying to avoid that, it takes a solid day to install all the software I have installed

tried that, but with RAID-ON on the bios, although it showed me the option of my 7 installation, when I click next it says it's the wrong version or something, even though this is off the disk I originally used to install it...

It may or may not take, but have you tried installing the RAID driver in Windows before enabling it in the bios?

I think I did. I found some people had 'SM Bus' as unidentified in device manager. I followed it up even though I didn't, and it led me to intel's website for the chipset instal package. So i've installed that with no success. I presume RAID drivers was included in the chipset installation package, but I'm not positive :S

I don't think they would install from the package without the RAID controller being enabled, why I said may or may not take.

Another that may not work, but have you tried booting to safe mode after enabling the raid controller? If not and you can get it to boot to safe mode, see if it will then let you install the raid driver.