If your device isn't recognized by PC when plugging via USB cable, try the following actions to recover:
If the above actions don't help, reset the device back to factory settings.
Check also that you have the latest device software version installed in your mobile device.
You need to have the Nokia Suite application installed on your PC.
To download and install Nokia Suite, visit your local Nokia website www.nokia.com/nokiasuite.
Once you have Nokia Suite installed on your computer, please do the following:
For more detailed information please watch the tutorial video from Nokia Care.
From 2013, the new Nokia Asha/S40 phones do not support Nokia Suite or PC suite. Instead, they use the Nokia Connectivity Cable Driver.
This FAQ applies to Nokia Lumia phones with Windows Phone 8, and a computer running on Windows 7, Vista or Windows 8. If you have Windows XP use the search field on this page to find this related FAQ: What should I do if my Nokia Lumia phone is not recognized by a computer running Windows XP?
Start by disconnecting your phone and other USB devices connected to your PC. Exit the PC software, such as Nokia Suite, Zune and Windows Media Player, which can establish a USB connection at the background. Use Ctrl+Alt+Del to see and manage processes that are running on your PC.
Check that you have latest updates installed on your PC
Here are two options to follow (ensure that Administrative rights are available):
Check your USB connection
Make sure that you are using the USB cable which was included with your phone. You may also try another port on the computer, but do not use a USB hub or the ports located on the front of your computer. Most versions of Windows (excluding Windows RT) allow you to connect to your Lumia with Windows Phone 8 by using Windows Explorer, which you can use to validate that you have an active connection.
Check and update your device driver
Confirm that your PC is able to communicate with Windows Update service through firewall(s).
You can also use the Windows Phone app, which is a free app for PC and Apple Mac. With the app, you can sync media content between your computer and your phone. This includes the music, pictures, videos, movies, ringtones, and podcasts on your computer that you want to copy to your phone. Windows 8 installs the app automatically. With Windows 7, you can download it from www.windowsphone.com. If you have a Mac, to download and install the Windows Phone app, go to the Mac App Store.
When a Nokia Lumia phone with Windows Phone 8 software is connected to a computer running Windows XP, the phone may not be recognized if the computer does not have Service Pack 3. Instead, a USB connectivity error will be displayed, or the device might be recognized as an MTP device. To fix this, do the following:
1. First, install the latest Microsoft Windows XP Service Pack 3 to your PC. You can download the Windows XP Service Pack 3 from Windows Update or manually from the Microsoft web pages: http://www.microsoft.com/en-us/download/details.aspx?id=24
2. Next, install the latest Microsoft Windows Media Player 11 to your PC. You can download Windows Media Player 11 from the Microsoft web pages:
After this, reboot your PC and you will be able to browse files in your Nokia Lumia phone with Windows Phone 8 software using a USB cable and Windows Explorer.
First, it is normal for the Nokia phone display to go blank during an update.
However, it may be that the PC update application Nokia Suite has lost contact with your Nokia phone and the phone display is suspended.
Do the following:
If there is still no response, take your Nokia device to your nearest Nokia Care point. If the device is within its warranty period, Nokia will repair the device under the usual warranty terms and conditions.
Note: If the Nokia device is not within its warranty period, Nokia is not liable for any loss as defined within the End-User Software Agreement.
Charging times differ between charging models. USB charging is limited by the maximum current output of the USB device, and may take longer than charging with conventional chargers.
Note: all batteries including high-quality batteries like Nokia's will eventually lose power retention capacity. If it is time to replace your battery with a new one, be sure to purchase an original Nokia battery from an authorized Nokia dealer.