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If you're trying to display output from the laptop to the Vizio you'd be better off using an HDMI to HDMI cable. The VGA port on the Vizio E320 only supports 640x480 resolution; you have to set your display output accordingly, usually in control panel. Using HDMI you're able to keep the signal HD, @720p. The E320 also supports 1080i, but you're not going to see all 1080 lines. If for some reason you're trying to go from the Vizio to the laptop it just doesn't work that way.
there may be an issue with the ir sensor board in the tv. you could use you serial number and model number to research the part to replace (rather inexpenisve part) or have a vizio certified repair company diagnose the issue and theyll replace the board for you.
Reset the tv and the cable box by unplug,replug it an hour later.Ur tv and cable box should reboot it self.The tv signal should return and work again.Not,call ur tv warrenty service for the repair.Tv under a year old,still have warrenty.
I had the same problem. My vizio remote for my 42 inch 2 month old vizio also seemed to stop working. Here's what I did: My vizio remote (like most remote's nowadays) was designed for multiple components (tv, dvd, vcr, etc). All you need to do to make the remote work again is set it back to tv. Now, the confusing thing about vizio remotes is that they actually have TWO places where you can switch the remote to the appliance you want to control. One is on top of the remote, the other is on the BOTTOM. Switch it back to TV using the BOTTOM. My remote had stopped working because I had inadvently switched it to another component on the BOTTOM component switch.