Old set up/stuck loading

So, I'm kind of a newby at buying/assembling/configuration, with that being said, I bought an old mining rig set up recently to just mess around with and possibly sell off to buy something better. I feel like I got a pretty good deal for what I bought. After taking it home and cleaning everything up I wanted to plug in one of the rigs just to make sure everything is working so I don't sell any junk. With that being said, the set up is a msi motherboard (x99a gaming pro carbon) x4 Corsair vengeance ddr4, x4 ASUS Dual NVIDIA GeForce GTX 1060 or 70 (idk) which ones, and a 500 gigabyte ssd (Seagate). I've got the system all plugged in and the fans are on and everything but when I plugged in the hardrive* and restarted the system all I get is a loading screen and it just basically freezes. I'm still new to this and I'm kind of stuck here, Internet days it may take a while to boot but I've never seen a computer take this long. Any advice would be very appreciated. In America, us dollars, says I have to post that?