I had a massive folder of about 500GB of data that I was organizing and copying over to my NAS for backup. Upon deleting a subfolder, somehow the entire root directory was deleted. Obviously at that size it was not in the recycle bin (I'm using Win7).
I used a program called "MiniTool Power Data Recovery" and it appeared to have recovered everything I lost in about 4 hours. I copied several more GBs over to my NAS before problems started. The files I just copied over ran perfectly fine on the NAS, however, the original source (the recovered ones) no longer worked and the data for the entire recovered directory is now corrupted. I looked through a few of the files with a hex editor and indeed the header information for those formats was not what it should of been.
Everything else on the drive appears to be unaffected, only the files which needed recovered are corrupted.
I've tried other tools to see if I could undelete the files again and store them to another drive but have had no luck. I tried running a repair with chkdsk but it found nothing wrong. I'm kind of at a loss on where to go from here.