12-03-2016 01:29 PM
12-04-2016 12:34 PM - edited 12-04-2016 12:35 PM
At this point, it can be both. I suggest first reinstalling the Intel video driver. If that doesn't work, it could be the display cable through the hinge that's defective.
Display driver: http://support.lenovo.com/us/en/products/Laptops-and-netbooks/Yoga-Series/yoga-900-13isk/downloads/D...
If that doesn't work, contact support via chat or phone: http://support.lenovo.com/us/en/products/Laptops-and-netbooks/Yoga-Series/yoga-900-13isk?tabName=Con...
Since it's only a week old, your retailer should be able to replace it for you.
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