Default [Q] M-Horse 9500 mini forgotten pattern lock

l have an m-horse 9500 mini and l forgot my pattern lock. after too many attempts l am now stuck on the unlock with your google account screen which l have tried to do without any luck. l have tried the hard reset vol down + power but it just brings out a triangle with an exclamation mark. l have tried other combinations but with no luck. l have also tried flashing, rooting and unlocking softwares but it seems that usb debugging is not enabled so my phone cant be read. please help