In any case this is definitely a main board problem namely its eeprom/memory chip and I doubt very much that a reset will clear this up but you are welcome to try the only reset form available which is ;
If you haven`t done it already ,unplug the TV's power cord and hold the power button (power button at the back lower left ) directly on the tv ,keep holding it for 20 secs or so then let the tv sit unplugged for a couple of minutes before you try it again.
Although i do not expect much out of this procedure , it has to be done to confirm that this problem can be cleared or not with a reset , you can even try it twice if you wish .
As I do not expect this to work or if it does then it could be temporay , here are the warranty claim info , you need to contact Vizio first ;
To obtain warranty service, contact VIZIO Technical Support
via e-mail:***@******.*** or via phone at 877 MY
VIZIO(###) ###-#### from 5:00AM to 9:00PM Monday through Friday and Saturday and Sunday 8:00 AM to 4:00 PM Pacific time, or visit www.VIZIO.com. PRE-AUTHORIZATION MUST
BE OBTAINED BEFORE SENDING ANY PRODUCT TO A VIZIO SERVICE CENTER. Proof of purchase in the form of a purchase ,receipt or copy thereof is required to show that a Product is within the warranty period
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