Computer frying hdds despite new PSU

[harvvv]

So. I noticed a crackling sound coming from my case a few weeks back and my first thought was my psu, but I wasn't sure. I started unplugging things and seeing if the sound still persisted. But after testing my ram and gfx card the computer refused to boot back up. The fans would spin and the light on my card would come on, and then die a second later.

I figured this just meant my psu was faulty, so I bought a new one. After installing the new psu today, my system still didn't boot. I went about unplugging components again, and this time it booted after I removed one of my hdds. However, I am met with a message from my BIOS saying my settings don't fully support the boot device. I noticed in my BIOS that none of my drives were being pick up either (two hdds (one that while plugged in stops the system booting) and one ssd with thr OS on).

So, I assumed this meant my drives were dead too. I plugged in a spare drive that had windows installed on it to see if that could be booted to. As soon as I turned on the computer, the hdd I just plugged in started crackling and I could smell burning plastic. I immediately disconnect everything, but I think that drive is probably dead now too.

My question is, what is burning my drives? Surely my brand new Seagate m12 ii isn't faulty? Can a faulty motherboard burn a drive?

 

[Lutfij]

1| We're going to need more info. You should post your full system's specs inclusive of your old and new PSU and your OS. Please list your specs as:
CPU:
Mobo:
Ram:
GPU:
SSD/HDD:
PSU:
Chassis:

2| You should also try and see if breadboaring the system with only your boot drive connected to see if you can get to BIOS/OS GUI.

3| If a new PSU is causing the same issue as you've seen on your old unit, it's possible your wires are crossing somewhere. I had a similar problem when the soldering under a motherboard pierced the wires and caused the wire to burn and give off a burning plastic odor.