I have a Gateway W340ua laptop that i'm working on with an LCD video issue. When it is powered on, the initial Gateway splashscreen may or may not be visible then goes away. It continues to boot up and you get a very very dim display once its booted up (you can see it shining a flashlight on it) so I assumed it may be an inverter or backlight issue.
However, I also tried booting it connected to an external LCD. With this, I see the Gateway splashscreen on the external and the external display stays on until the Windows splashscreen then its display goes off. I still see the very dim display on the LCD. I tried ALT-F4 to switch between the external monitor and the laptop but nothing comes back on the external monitor.
With the external monitor I also did a restart and had it go into the BIOS setup. The external monitor displays the BIOS setup ok and I left it on there for about 15 minutes and the display does not go away on the external as long as its left in the BIOS setup.
In doing some research on this model (I seldom work on Gateways), I see it has had issues with the on-board NVidia video cards and heat issues. Anyone have experience with these laptops and can point me in the right direction. The laptop is probably worth doing a backlight or inverter replacement but if its the video card issue, I really don't think its worth that level of repair. Any advice?