there is only 4 items I can access alltogether

The ONLY apps on the entire tab I can access AT ALL are internet, drive, help,& settings. I factory reset it. Nothing different. I also switched users, it didn't change. I tried to download Google play store, the tablet won't allow me to download ANYTHING. The suggestion that page gave me was to enable download manager. But that option is grey & unclickable . I heard some one mention the word refurbished?? Is this my dilemma possibly? What ever that may b. Is it fixable? Literally the only thing I can do is browse the internet?