New SSD, can't access old HDD

[ChazLazy]

I just recently bought a new SSD, I unplugged my other HDD's and it installed perfectly fine, once I got all the updates/drivers installed, I replugged all my HDD's back in (to keep things less confusing, I will name them HDD1 and HDD2). HDD1 had my old windows installed on it, HDD was just a storage drive. Now, when I turn my computer back on, it will try and load windows and blue screen (it's trying to load HDD1). I reboot, change the boot order to the SSD, but it comes up with an Err1Err3. Strange. I unplug my SSD, and leave HDD1 and HDD2 in and it boots fine. I unplug HDD1, plug in SSD and it boots fine. I then DON'T turn off the PC, plug back in HDD1 and it does not see HDD1. Is there anyway to get my files from HDD1? I'm thinking it might be a drive letter issue. Any help? D: The drive does not come up in disk management either.

 

[rehed21]

Does your motherboard BIOS have a setting which enables/disables hot swapping? If you can't hot swap you want to run Windows off HDD1 and move the files to HDD2, then remove HDD1 and run Windows off the SSD. Unless you can figure out how to hot swap you will either need to get an external enclosure for HDD1 or put it into another computer and format it (assuming you still want to use it).