cheerson cx-10

I have a new cheerson cx-10se and it has been flying great for four days but recently it starts to flip uncontrollably and crash. Can't throttle down when it starts to crash. Than the lights blink like the gyros are calibrating. What's wrong with it?

FQ777-954, the eye-catching feature is like the FQ777-954, it's a mini camera quadcopter support FPV function. Do you think this Cheerson CX-10W will be successful like their Cheerson CX10 series? Here is complete information about this Cheerson CX-Star: Features *4 channels with LED lights...