My music PC (AMD 4800+ Dual Core, Asus A8V Mobo, 250GB IDE program drive, 120GB SATA audio drive, 500gb SATA data drive) that I built last year has been trouble free until recently when I started having problems with my firewire peripherals (sound card & fx box). I was greeted with the BSOD every time I tried to use them at the same time. I thought the problem was due to the two units sharing the same firewire bus on the mobo so I bought a pci firewire card. Things got even worse when trying to install the card as the pc crashed and would not start up so I removed it. When starting up again a message appeared saying 'overclocking has failed! Restoring defaults'!!! I then found that my 2 SATA drives were not being detected and a message asked if I wanted to rebuild the array. I (stupidly) said yes and now my SATA drives are in a 2 + 0 stripe array! Yet they're still not showing up in windows (although the array is visible in the C drive properties?!). I've tried disabling the raid controller but to no avail.

Does anyone know how I can restore these drives to their original independent state without losing data? Will deleting the array wipe the data?

Thanks in advance

I (stupidly) said yes and now my SATA drives are in a 2 + 0 stripe array! Yet they're still not showing up in windows (although the array is visible in the C drive properties?!).

Unlucky.

Just to be clear. If you have inadvertently striped two drives into a RAID 0 you should now have just two visible "drives" in Disk Management. One being the IDE and the other being the new Array and with the latter being twice the size of the smaller of the two SATA drives - in this case that would be 120GB x2 = 240GB. If that is the size of the array volume/drive I would be pretty sure you have really somehow inadvertently built a RAID 0 array using all of one SATA and 120GB out of the other's 500GB.

Dont write anything to this volume if it happens to appear in My Computer.

If I have understood things correctly and the two drives were simple SATA drives beforehand you need to remove them from the array - usually be changing their status in the BIOS setup. The creation of the stripe may have altered some data so the next step (assuming you can now identify both SATAs and assuming you cannot see the old files or file system) would be to attempt DIY recovery with GetDataBack (http://www.runtime.org) for FAT or NTFS as appropriate.