Thank You

It is most likely defaulting to Charge Mode instead of Mass Storage.

Connect the phone to the computer

Pull down the notification (slide from the top of the screen) that shows you are connected via USB, click on USB connected.

Make sure mass storage is selected then click done.

Wait 30 seconds or so and both the internal memory and SD card should mount with no problem and be available like before on the computer.

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Thanks,
Richard

Thank You, XXXXX XXXXX rule this out.

Another cause for this is the Main Framework service corrupting.

What I want to do is clear this service, then restart the phone.

To do this, can you do the following please

On the phone go to Settings, Applications, Manage Applications.

Press ALL so all Applications are listed.

Look for and press on Google Services Framework.

Press Clear Data

Once done, remove the battery and wait 5 minutes

Then put the battery back in and turn on the phone and try to connect.

If you still have the problem, please let me know Before Rating My Service Thank You.

ok, with it connected to the computer.

Can you go to Start, and right click on Computer and select Manage

Then go to Disk Management. Look for the device there as a hard disk (as it is mounted in windows as one)

If you see it, right click on it and assign it a drive letter.

If you do not see it there, go back to Start, right click on Computer and select Manage.

Go to Device Manager

Look for the phone there, it will most likely be listed under Other Devices. If it is, right click on it and select Uninstall.

Then restart the computer and tell me if the computer recognizes it please.