9-inch Android 4.1.1 Tablet PC 1.2GHz CPU 4GB Nand w/ Google... - Help Manuals User Guides

I have been trying to download apps from the playstore on my SPV android tablet, I have been getting mainly the 921, "could not download due to an error". I have uninstalled the updates to the play store, cleared the cashe and data, and did the same thing with every other app already installed on my trablet and yet it still does it. I also removed and re added my gmail account. I did each one at least 3 times, so besides doing a hard reset, what should I do?