android - Tried everything, ADB is not detecting my nexus on windows 7 -

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i'm trying add external device(nexus 5) test. that
1) have installed google usb drivers
2) set environment variables android_home & path
3) set android:debugger="true" in manifest, same in gradle.
4) if list devices connected adb in command prompt, gets no devices.
5) driver nexus 5 uptodate have checked device manager of windows 7.
6) enabled usb debugging on phone in developer options.

it seems nothing working on way here, how can test camera/bluetooth app on nexus 5? please, help.

did trychanging usb cable? did trick moto x when trying connect debugging purposes. did not work usb cable came phone worked cable bought.


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