Dell 3150 Hdd issue

[Ppump12valve]

Hello, my dad’s 2007 Inspiron recently kicked the bucket will no longer display anything together display and the fans won’t spin  after trying for a few days of trying to get it to work there was no effort so he went out and bought a brand new inspire on a 3150. I setup this laptop up for him and he really only needs to do  lite CAD and Google So it seemed plenty enough for him. Issue is I tried to move all of his data onto a 500 gig hard drive and when I installed it into the secondary they on the new dell laptop it will no longer boot and it will not let me into the bios. if I unplug the drive and disable RAID in the bios I can no longer boot into windows 10 because it says that it’s not accessible. after turning off read I was able to install the Drive again and I just turned it on and it’s been sitting idling for about an hour now and still nothing. Just the Dell logo. I tried a different hard drive and I got the same results. If anybody has any ideas please let me know!