Blink Problem

[GaMixRoWeR]

Everytime I start up after two minutes my screen blinks and then works fine. Its not a major problem but I have checked my wires and connections, nothing wrong. My computer is a month old I have the full set monitor, key board, etc. Heres my computer;
http://www.bestbuy.com/site/Asus+-+...ssor/9541891.p?id=1218121457704&skuId=9541891

 

[JXiPlatform]

It's looking for a second monitor. Disable #2 in display properites or uncheck "extend my desktop".