My Feigao 7XL siezed

Hey everyone, today after about 6 months in the box i took out my 7xl motor because i finally found a old buggy i had that i figured id put it on. Well even before i bolted on to the car i turned on my esc and put all the settings on low seeing as the buggy only weighs 5lbs, and made sure that the motor still ran. well it did until about 10 seconds in, it decided to go clunk and stop. I dont know what is wrong with it, i have not taken it apart yet i just wanted to ask here to see if it was something simple. The esc still works on my other electric motors but the feigao still wont move, all i hear when i touch the throttle is a little click then nothing. Has anyone had this problem before, can anyone help me, cuz i want to get my bug running asap. I've had the motor less then a year and ran it less then 1 hour total then it just sat in its box. Oh yeah i forgot to mention i bought it here, just in-case anyone is curious.