Hi Could you link to the one you purchased?   Could you try the Community Edition of Paragon Partition Manager?   [IMAGE]256GB NVMe, 1 TB SSD & 16 GB USB    
This could be a dumb question, but I can't understand where is the 1TB storage space on this PC . OS  (c)space say 215GB but the PC specification say 1TB , my first new PC in many years , maybe I'm getting confused. Thank you  
Storage space