I transferred ownership of my laptop's files to my desktop?

[ReinTurtle]

I recently built a desktop after only using a laptop for a few years. I wanted to transfer some files and figured the fastest way would be to connect my laptop's hard drive to the desktop. After clicking some admin "proceed" button I was indeed able to access my files (to be clear I did not modify any files while connected to my desktop, just copy). However when I put the drive back in my laptop, problems arose... My autohotkey scripts don't work anymore, firefox can only startup when I run it as admin, chrome and some other programs don't start up at all and some files are just inaccesible from my laptop now. Other than I needed admin rights to access even my downloads folder (also appdata and many more).

Anyway, me and my friend concluded that I, on my desktop, took permissions away from myself (?), and may have tranferred the ownership of my files (not sure how that works exactly). I have a already tried some things including a system restore, which failed, and I now don't really know what to do next or where to look for other options. Hence this forum post.

 

Is there any way to give permission for accessing all files at once? Some way to tranfer back the file ownership (or whatever it is)?

Any help would be greatly appreciated!

 

By the way I'm on the latest version of windows 10 and my laptop is the Asus GL552VW, the boot drive of which is the drive in question.