When you use the word "intermittent" it makes me thing a connector is flaky. I know you've changed the HDMI cable but the connectors the cable plugs into may be bad on either end. Connectors wear out.
So do you mean the connectors on each end of the hdmi cord or the ones on the TV and my laptop? Thanks alot for responding. Also, does it matter if the hdmi cable is a 1.3 or should it be a 1.4 or higher quality cable?