Windows tablet format without recovery partition


Aug 7, 2015
Hello everyone. I have one windows tablet with 8.1. I tried to formated with wondows 10 but failled when i dont find drivers for my tablet and nothing works correctly. I tried to recovery with system recovery partition but not boot. I tried to do it active with diskpart and no work. And i decide to format with usb bootable windows 8.1. When the installation begin notice me that cant find the drivers in bootble device and dont let me to continue the format until find drivers. My tablet is vero w10i (oktabit). Can anyone tell me how i can format my tablet and where i can find the drivers ; ( motherboard is uefi and is insydeh20). Sorry for my English

Thank you all...!!!!