Default Videocon a24 driver problem

Dont know whether its the right section to post.
My videocon a24 restarted all of a sudden and started boot loop. Tried factory reset from recovery,but no luck.So I decided to flash stock rom using sptools. But when i connect the device without battery the device manager shows MT65** and disconnects and reconnects again. Hence sptool is not able to flash the rom. Please helpp....!!!!