Freezes when watching youtube video

[caeeln]

Hi there

I've a clean installed windows 8.1 laptop with up-to-date drivers (installed windows yesterday). I use a Lenovo USB to DVI adapter.

I use the monitor only for "normal things" like surfing and watching youtube videos. Surfing works without any problems, but until I watch a video, the monitor freezes after some seconds. I have to plug-out plug-in again.

Went trough the FAQ but nothing helped. Tested all my usb ports (I only have USB 3.0) but same results. Also had two other DVI and a HDMI cable.

Thank you for your help