Win7 doesn't boot anymore, drives are a raid all of a sudden

Good morning everyone, am trying to describe my issue as good as possible, so please bear with me =)

Two days ago, I went into a game of League of Legends, on the swap to the loading screen I alt tabbed which then caused a bluescreen to happen.

It gave me the message: KERNEL_DATA_INPAGE_ERROR and asked me to check if I have any new hard- or software with the technical information: ***STOP: 0x0000007A (0x0000000000000020, 0xFFFFFFFFC000009D, 0xFFFFF x0000000000000000) Physical memory dump FAILED with status 0xc0000001.

Over the course of the next 2 days, I've had a few bluescreens with the same message, ran CHKDSK, let it fix something and then had three following popups from Marvell Event Message:

[WARNING] Physical disk 2 is plugged out

[INFO] Physical disk 2 is plugged in

[WARNING] Physical disk 2 is plugged out

A restart solved the issue, windows wanted to do an update which is fine by me, however, when it tried to restart it couldn't boot the OS. A look into the BIOS gave me some insight on what happened: It can still find both my SSD and my HDD, however, all of a sudden they're in a raid. At first, I was able to select the RAID as a boot priority, but later on even that option vanished, leaving me with only the following three as boot options.

Removable Dev.

USB: TDK TF10 (My USB stick with the windows 7 ISO)

ATAPI CD-ROM

My question is the following: Is it the Raid that appeared all of a sudden? Can I somehow undo it? Are my drives damaged? Because they do show up when I start up my PC

I have uploaded the relevant images here picsurge.com -

Any help you can provide is greatly appreciated, if you need any additional information feel free to drop me a message here!

Hello Mellon Head

It is an Asus P6T6 WS Revolution

As a little update I have been able to start my PC again by doing some stuff in the BIOS, yet, in the mainpage of my BIOS, all the SATAS are still not detected. Furthermore, they're still showing up as a Raid, but this time around it's both drives with their specific names (e.G. RAID: Kingston SH10)

I'm a bit afraid of formatting when there's the possibility that it won't see my hard drives anymore, what do you think?

It was set to IDE, tried AHCI too which worked aswell. Ever since my Computer started working again it just feels way slower and the problem that both my drives are recognized as 2 separate raid units still persist though.