WTH Microsoft files disappeared

My computer has 2 drives, one were windows is installed and the other hard drive for everything else. My files just disappeared from my desktop after a restart. Let me explain. I had 5 files on my desktop and my computer was getting a little sluggish so I thought it would be a good time to perform image restore from Macrium Reflect backup, but before I do anything I copy all my 5 files ( notepad files ) from my desktop and pasted them unto my other hard drive. I then reformatted my C drive hard drive clean. I then did a image restored on this drive and everything was good. I restarted my computer and copy back my files from the other drive onto my desktop, I deleted the folder, I did a windows update afterwards I rebooted the computer again and this time when it loaded my files weren't there on my desktop and the folder that I delete wasn't in the recycling bin, So what happen Microsoft with my files?