BBB keep reboot/shutting down when using power adapter

Hi, I got this problem with BBB. The Beagle keep rebooting/shutdown when I’m using power adapter. Powering the BBB with power adapter alone will end up with endless reboot. So I try connect it to PC via USB first then connect the adapter. It come out with “Power button pressed” (picture below) when I connect the power adapter.

The beagle works just fine when it only connected to PC via the mini USB . Im using samsung travel adapter EP-TA10UWE and some cheap wire. Any help will be appreciated.

Kill the junk!

I already answered this once. Response is the same as before.

Get a real power supplythat can handle the surge…