Moniter problem?

[maxhenwood12345]

Hello everyone, I have a HP Compaq 6720s laptop and a Acer AL1916W external moniter id like to use.

When i plug the moniter into the laptop, the external moniter goes all fuzzy and has lines running down the screen, Ive tryed a different VGA cable but its still the same, I heard that its the backing plate of it inside my laptop is being charged (it stops when i unplug charger), Can anyone tell me a solution to this? Would one of the Gold plated VGA cables do the trick or am i going to need something else? Thankyou for reading.

[klamor]

if you can, test the monitor on another computer. if you still get the same result, you sohuld return the monitor for a refund/exchange. if it DOES work, then something is funky with your laptop, if your still under warranty, you could try calling HP to have it looked at