Marshall1997

Hi, i have laptop acer aspire E5-476G, i bought this usb hub with a dc power adapter. I works find at first but then when i insert the dc power, my laptop turn off on its own. When i try to turn back on, it just shows a black screen but all my usb port work just fine (i charge my phone lol), theres also led light showing that my laptop is turn on and my fan is running too. Anyone know what is happening here? How to fix this problem?