Hello everyone, I currently have a rather large problem. My friend runs a recording studio and his computer decided to have a bit of a freakout the other night and just turned itself off and restarted. Now, I have recieved the following problem: I've had this problem before. It's a simple enough fix, as i've done it before. However, this isn't the biggest problem. The problem now is that the hard drives seem to be missing. Upon startup, the computer will mention all the hard drives in the machine, their space, and their names (if any). They also appear in BIOS. As of right now, there are currently two 500GB drives, and a 500GB split into two partitions of 250GB a piece, and these display on the above-mentioned forms without any issue. All are SATA drives. They also appear on the RAID configuration also (RAID0). However, the Windows XP setup disk refuses to acknowledge their prescence, not allowing me to press F2 at the beginning of the disk startup for Automated Recovery Console or pressing 'R' at the menu to start a repair of the problem. It will mention that it cannot find any hard drives, and this is the same with asking it to install Windows too. The 'Ultimate Windows XP Boot Disk' my friend has also has no effect, with the program being unable to find any disks through any feature of it's own and trying to access them using the command prompt. I have tried loading RAID drivers by floppy when prompted by the Windows XP setup disk (Intel Matrix Storage Drivers for Intel Motherboard Model #D975XBX downloaded from the Intel website), and even upon loading these Windows will not acknowledge that they are there. What I have noticed though, is that on the RAID config utility, the version number listed is '184.108.40.2062'. However, on the Intel disk provided (which hasn't been useful to this point either), has an Intel Matrix Raid driver setup with the version number '220.127.116.112'. Whether it would be an idea to seek out these two particular versions and stick them on a Floppy and give them a shot would do me better, i'm not sure. I am not entirely sure, but if these disks had gone and died, would they be recognized on the computer start-up screen, BIOS or the Raid Config utility at all, and would it even bother to notify me that a system file is corrupt upon attempting to load Windows XP? As my friend runs a studio, there is thousands of pounds worth of work on the machine and i'm praying it can be saved. If I can just make Windows realise that the drives are there, I can solve the above quoted problem without an issue. Any ideas? It's a bizarre one for me, that's for sure. Thank you for your time.