Boot Camp not able to find Mac image
To make this work again, are you able to boot into the recovery partition? (Try rebooting while holding Command + r keys). If not, try booting into Target Disk Mode using Boot Camp, and then try booting into the recovery partition.

Once on it, try using diskutil to see if the drive is functional.

Basically, (when on the recovery partition) launch Terminal and type diskutil list. It will give you a list of current disks. Please add that list, or even a picture of your screen with that list, so that I can identify which disk#s# you need to boot onto/repair/reinstall macOS to.

But, if you're lucky, booting into Target Disk Mode and then into the recovery partition will fix this.

As for why Caps Lock and "that key between o and q" (I don't know what that is) weren't responding, that may be a keyboard issue, I don't really have any way of knowing without checking it out.