Blank Screen

[Kaiser]

Hi there,

I have a 13" Macbook Pro (Mid-2010) with OS X Yosemite version 10.10.5.

I have connected an external monitor to HV1-U60D2L but the external monitor is blank. The screen maps in my system settings, and I can move my mouse to the screen (although I can't see the mouse)

I attached the log file.

Please advise on how i can overcome the problem.

Thanks.