Last night I installed some new RAM. Same size as previously (16GB but 2 x 8GB sticks rather than 4 x 4 GB sticks so I have room to upgrade if need be).
When I turned my PC on in the bios setup screen it had red text saying 'RAM changed. Configure or continue'. I continued and the pc couldn't find my master SSD with the OS on it.
After some fiddling around in the BIOS (American Megatrends) I got it working again and booted into windows 10 but my RAIDed second drive wasn't showing.
Now I've gone back into the BIOS and now none of my drives are showing.
If I check the boot sequence I can see my drives but the all have RAID at the start of their names (e.g. [RAID:M4-CT128M]. I'm pretty sure it didn't have that before. If I enter the drive listing nothing shows at all apart from [Not Detected] for every type (IDE and SATA)
Having googled for hours I can't find anything that might suddenly make all my drives think they're RAID when only physically 2 of them are.