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You should visit a sony center,see if there is something wrong with the device.
Are you willing to try a software repair?it may fix your issue.If not,a service is your only option.
What do you mean by insertion?And what does dumping want to be?You need to download sony update service,back up your data and do the process of repairing.
You can give it a try,if you have no service close to you.But if it does not solve the problem,you have to take it to any service.
Do you know how to repair?