Hi I have a Dell Precision M65 which has been running fine for a while. I altered the screen resolution setting to try and get a better picture, and the screen went blank. I rebooted and still blank.

If I plug in an external monitor then that works fine but nothing at all on the laptop lcd, not even when initially booting.

I have tried to adjust the settings whilst the external monitor is attached but the Laptop screen will not attach, and whenever I make any setting adjustments and click apply they revert back.

Is the screen broken and it is a major coincidence that it broke when I changed the screen resolution?

I went through the bios settings and it had a native resolution of 0 x 0, which I believe was previously 1920 x something or over.

Any help would be greatly appreciated, as I am currently looking at ditching the laptop or using an external monitor permanently, which kind of defeats the object of a laptop.

Thanks in Advance