Error in use camera & video recording "

Dear Sir

I had purchased a chinz e71 copy of nokia e71 for last two maonth.
my mobile nokia E71 copy in china mobile.Error in use camera & video recording "camera module not ready and camcoder is not ready" but other all function properly working.....

plz read this mail and tell me best solution on my mail id

pls help me as soon as passible..
thanking you