Default [Q] NEED help pls.stuck on sony logo

hi everyone. can anyone help me with my phone. i was repairing my xperia sp using the pc companion. when suddenly when pc companion says my phone is already flashing, my computer had a blue screen issue. then when i try to turn on my phone, it is only stuck in the sony logo. when i try to reset it by pressing the button at the back, it only vibrates 3 times and again just stuck to sony logo. i dont know what to do. my battery is somehow around 80-95% at that time.