to make 100% to remove the google accont or pattern lock do this
1. go adnrion tab info the phone make sure your unit in debugger
go to manage check if connected in debug
2.info the tablet PC if rooted if not rooted
go to this step to get root
3. how to root fully of the phone then press the boot or vol+ or vol-
go to mtk tab get the adnriod mtk boot then press the oneboot key option then connect your phone to usb and if done,
4 go back to adnriod tab then reset only gmali and done
whitout eraser the files