I am new to helis so if someone could help me out, I just got a blade cx2 yesterday I have flown it through 2 or 3 batterys with no problems all the sudden now when i try to take off the heli just lifts up and like nosedives to the left it first started when i was flying it and i could not get it to hover it just kept going forward even though i had the trim all the way down any suggestions please i have tried every trim adjustment on the radio

Are you sure you didn't damage anything in a crash? make sure that the swashplate is level too, something it can get stuck on something or it's even possible that the top half and bottom half have separated.

and before you start the blades up test all the controls (except for the throttle) and make sure all the servos are in working order, also check to make sure all the screws are tight and you didnt sling one out (its happen to me before, lock lite is a must).

thanks for your help guys i checked the swashplate and sure enough it had separated i squeezed it back together and problem solved thanks for helping out the new guy