My guess is that the d2 pad company puts a virus in their tablet software to kill the tablet. In this way, they try to get you to buy a new one from them in exchange for your broken one.
I ran into the same problem. Firsts your apps screw up, then the OS goes into a coma, and then your BIOS dies and after that the tablet is dead. After that your only choice is to send the tablet back to the company for a costly repair or replacement. However, it is usually replaced instead of repaired. Sounds like a virus to me.