camera failed problem

i solved the camera failed problem in my mobile in just five minutes do one thing end of applications from task bar,
switch off ur phone
take out memory card
now after 1 minutes put the battery back and switch on the mobile and with out memory card
now switch on the camera
a message will come that u need to insert memory card for the camera
now put the memory card it will work if not press the camera gently anticlockwise and iam sure it will work press it till u get the picture but gently it will work sure
i can do it so can u