Recuva renamed drive and deleted files

Hi I was wondering if someone would know why this happened to me:

I installed recuva on my main HDD and scaned a folder in a secondary drive for some files. After it finished and failed to find the files I just closed it but

it did two things: 1) rename my hard drive from E: to H: and DELETED THE ENTIRE FOLDER I SEARCHED IN. When i see the hard drive in my computer it still has the same amount of memory taken

up but the files are simply not there. Does anyone have any idea what's going on? I never deleted anything myself.

Thanks!