My monitor is 1.5 years old and has been working perfectly. (I take very good care of my monitor!) Yesterday, with no warning, the screen slightly dimmed and then went black. The "on-off" switch flickered. I tried disconnecting it from my CPU and unplugging it from the electrical source and I tried re-booting my computer. None of this made any difference. I have a new video card but connected the monitor to another computer just in case the new card was bad. Again, no results. I hate to think that a 1.5 year old monitor needs to be replaced. Any suggestions? Thanks!