Stuck in bootloop

[TheBlindBandit]

I recently bought a Samsung evo 970 plus m.2 PCIe NVMe drive -500 GB (Got it for 77 USD in a sale).  Cloned my 1 TB toshiba HDD using the Samsung software. Booted from the ssd after erasing the HDD(used DBAN). Today I decided to run diskpart after initialising the HDD for the first time, and noticed that both my drives were in RAID for some reason. I mostly use the game for development (currently a student), and gaming. Didn't think I needed RAID. So I went into the BIOS and changed the SATA operation setting from RAID on to AHCI and now my laptop's in bootloop. Reverted to RAID on, but still no luck. I have a dell support assist pen drive in case I need to re-install windows. Could someone please help?

 

(Also, should I keep the setting for SATA operation RAID on , or in AHCI? ). 

 

System Specs:

Alienware 15R3-2016

8 GB DDR4 Ram

Intel core i5-6300 HQ

Nvidia GTX 1060

1TB 2.5" HDD

500 GB PCIe NVMe M.2 Samsung 970 Evo Plus SSD (Newly added)

Planning to use SSD as boot drive, and HDD as storage drive.