Hi MarieLynn
Viewsonic has some serious issues with their products and their customer support is much to be desired. What you can try is replace low or dead batteries, if that doesn't solve the problem remove the batteries from the remote and unplug the t.v. Then press the the power button for 2 minutes on the t.v itself, this is what is known as a hard re-set. It will attempt to bring the device back to default values. On the remote itself do the same thing, with batteries out press the power on button for the same time period, this will drain the capacitors of extra power in them. Re-install the batteries and then plug back your set. When you turn the set back on do not do it from the remote, but from the set itself. See what effect that has, and if the screen comes back try with your remote.
please post back your findings.