Default [Q] techno p3 problem

hello, i have a techno p3 device.. when i turn it on only the techno logo appears ,it doesn't boot .. i cant also boot into factory mode because it give me the same feedback.. i cant also use ADB to work on it because the drivers doesnt install when i insert my usb .. the only sector i can boot in is the qualcomm diagnostics , i.e holding down the two volume keys and pressing the power button for a vibration feedback and when i plAce my usb it installs the device as a qualcomm 900e hs-usb device...is there any way i can do to get it working .. i have the stock rom...please help me,thanks in advance.