I wanted to post to this forum but it went to the general mobile devices forum instead. 

Anyway a very thin vertical while line started to appear on my screen last week. At first I could get rid of it by rebooting. But now it's permanently there. Is this a hardware or software issue . How to check? I purchased this tablet on  Dec 2013 so it is probably out of warranty.  

New info:  The line still exists when I boot into Bios. So I think its probably a hardware issue ? 

Any inputs ?