[System Setup] is also in the wrong off MTP (media device) and now the phone is not connected to computer trouble?

First of all, my situation, of course, anxious people can skip this paragraph. The newly installed Win 7 32-bit system, then 3 directly connected to the computer, should be automatically loaded with the driver. After I was normal on the computer to open the memory operation of the mobile phone copy and paste cut, and then the hands of the cheap, after the completion of want to safely quit the connection, point off the MTP, hehe, after the situation is installed in the case of assistant, mobile phone connection to the computer is still unresponsive.
Gossip does not say much, the focus is below.
1, download the installation package, open the app after installing on the phone (create shortcut)
2, enter the keywords in the filter bar input USB point settings → point usb computer connection → Point start
OK, congratulations.
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(Daniel is really strong.)