This looks to be a warranty issue. Back to the shop or Asus support to have it fixed.
Kees
Laptop model : ASUS n751jx-t4027d
Monitor model : SAMSUNG SyncMaster S22B150
I bought my laptop in February 2015.Ever since I've had my monitor connected to it via HDMI :
http://s12.postimg.org/ip1jv0jv1/20150920_172232.jpg
http://s12.postimg.org/s71av25jh/20150920_172252.jpg
http://s12.postimg.org/hy8tp8hhp/20150920_172301.jpg
I've been using the monitor like that since I got my laptop and I had no issues with it until now.
Here's the problem ..the laptop is connected to the monitor for about 5-10mins with no problems what so ever and all of a sudden the HDMI starts turning on and off,making the USB unplug sound.It does that every 4-5 seconds,turning both the monitor and the laptop screen on and off.What could the problem be? The laptop hasn't sustained any damage since I've got it,the problem happened just like that this morning and it's been going for 4-5 hours now.
Please help!!
Here's a video of the problem:

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