Windows 10 Help with Booting into Windows

Hello, I am a windows 10 user and about a year ago i have upgraded my 1 TB hard drive to an SSD, I have used a tool for that and it worked perfectly fine. The problem is that today, when I had both the SSD and the hard drive active in my system, I tried booting into the hard drive and it just hit me with a blue screen and from that point onward my whole system is gone.

Prior to this, I wanted to expand my C: drive, as the SSD had 1TB separated into C: and D:. I have read online that the way you do this is you have to shrink down the D: drive and then expand the C: drive. But after actually shrinking the D: i couldn't expand the C:, that's why I wanted to boot to the old hard drive - so I could access windows from a different partition and so I could expand it there. I have now removed the hard drive and I tried booting into the SSD that I thought I was booting into the whole time. It simply tells me an error message that a file is missing at E:/ (which is the directory where I had my booting files on the old hard drive.)

After this I plugged in a ubuntu flash disc and the disc is completely fine, It even lets me mount it. I will provide you with a screenshot and I will be very grateful for any help, as I don't want to waste a lot of data on my drive.
(Btw. excuse the foreign language in some parts)
As you can see, there is in fact a 500GB partition, which is my C: drive, then there's a 342 GB partition that used to be my D: drive
Thanks for reading and helping me overcome this issue.