|As best I know SSD drives are less problematic when a sudden loss of power occurs.|
I'm interpreting your last post as the SSD is your primary drive - with the OS etc. installed?
SSD drives are not to be defragged.
As regards chckdsk and an SSD - read these articles:
Can you boot into safe-mode?
Using another computer download and burn to a DVD an ISO for ubuntu - ubuntu.com
It's a free Linux variant. Boot the system with that DVD. It will load into RAM only - unless you tell or or allow it to do otherwise. Do NOT install it to any hard drive.
It will boot up to a windows style desktop. Then see if you can locate and view your two hard drives. If you can - you can then copy data off either (or both) drive(s) to external storage - minimum being DVD, ideally to an external (usb) hard drive.
The Linux (ubuntu) boot up will be a means of verifying the integrity of your two hard drives; as if they're OK - even though they may require some maintenance (the chkdisk and defrag etc. routines at least - then you will at least be able to access/save contents?
But first try safe-mode.
Remember that if you disconnect the secondary hard drive, depending on how the two drives are connected you may or may not be able to boot the first. If using cable-select removing the second drive (disconnecting it) ought not to affect the booting of the primary. But if using Master/Slave method then you will have to reset the jumper on the primary to be Master (only - without slave); as otherwise it will likely not boot up.