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Originally Posted by hpdung99
First, thanks for replying.
Well I tried to turn it off and on, and even try to perform a hard reset for like 20 times over the last 4 hours and it still shows ksm usb screen, and unresponsive 
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What tshering was trying to say, is that for the factory reset to work, the device must be off. And, if it is off, it might turn on properly. You don't actually know what state the device is in. Force it off by holding the power button down for 20 seconds or so, and then try turning it on. Or the factory reset.
And make sure you have actually charged it for a while.