Power on - Green; L - blinking

I just open it and plug it in, windows did not detect the arduino, green led- lit, (power) and the L-led (orange) is blinking, any help, thanks in advance. Is this a faulty hardware?

I did try to reset it, but seems nothing has been reset. if it comes with pre-loaded blink sketch. guessing it faulty hardware (arduino uno r3 )

Got another USB-A USB-B cable to try (again) with?
The blink sketch is pre-loaded.

got 3 arduino actually, the other 2 is working fine, I did use the other cable too, only this one was not detected by windows 10,
is atmega328p faulty? (bootloader maybe?) dont know...

Must be defective.

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thanks, maybe it is defective

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