Give me the make & model or the laptop & the Sharp & I'll offer to research this for you. Are there no screen adjustments (Settings) on the Sharp that will correct this? Make sure it's using the latest & correct drivers for the vid card in the laptop ... & 1280x720 stikes me as sounding a bit low for a 32" screen. I know it says "Recommended" but, can you not select a higher resolution? Oh, right, you did say you can't change it... sounds like a driver issue, @ this point.
Drew