If you can't transfer pictures, music or videos between your device and PC, view this info on resolving conflicts.
Start Device Manager.
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Windows 10
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Right-Click Start > Device Manager.
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Windows 8
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Right-Click Start Screen > All Apps > Control Panel > System and Security > Device Manager.
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Windows 7
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Click Start > Control Panel > System and Security > Device Manager.
For detailed instructions and older operating systems, refer to Opening Windows Device Manager.
The following devices are normally installed:
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Modems
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LGE CDMA USB Modem
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Ports (COM & LPT)
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LGE CDMA USB Serial Port (COM x)
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Universal Serial Bus controllers
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LGE CDMA Composite USB Device

If a conflict is present, a red X, yellow ! or yellow ? is displayed to the left of a listed device or may be indicated by a device entry labeled Other Devices or Unknown. The drivers must be updated or reinstalled.

If a conflict is present:
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Ensure that the device drivers are installed. Refer to Install USB drivers for additional assistance.
If the device drivers are installed and a conflict is still present, continue to step 2.
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Right-click the device then click Update Driver Software.

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Click Browse my computer for driver software.
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Enter C:\Program Files\LG Electronics\LG USB Modem Driver into the search window then click Next.
The driver location can be entered manually or navigated to by clicking Browse.
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Click Close.