ASUS G50VT-X1 displays only 1280 x 720

This is the laptop available at Best Buy 3 to 4 years ago.
I just restored it to factory default last night because I kept getting blue screen with page fault error. Somehow the highest resolution it can display is 1280 x 720 on the system LCD monitor. I downloaded the latest driver from NVIDIA but still it has 1280 x 720 instead of 1366 x 768 it used to be able to display.
If I try to use the NVIDIA Display with NVIDIA Tray, I got "NVIDIA Display settings are not available. You are not currently using a display attached to an NVIDIA GPU." If I looked at the Adapter tab in display control panel, it displays unavailable on all the adapter information items.

Looking at the Display adatpers in Device Manager, it shows a small yellow ! icon by the monitor icon. I tried to update driver, it shows the driver being current. I also deleted it and rebooted to let it find the driver but it found the same with ! icon.

Anyway to allow me to get its full resolution back?

Thanks,




Looks like it's not recognized correctly.

 

Try completely uninstalling your nvidia drivers and then rebooting and reinstalling.

 

Thanks for the suggestion. Tried uninstall the driver come with system restore, rebooted, and reinstalled the one from NVIDIA. It is still the same. I suspect that the video card is dead that the video is using system memory to drive. Is it likely?
After the original driver was uninstalled, the standard video adapter driver showed up in the device manager. It still displayed 1280 x 720.
I tried to add another monitor to the laptop, then the system couldn't boot successfully. Unplug it, it couldn't boot properly whether in safe mode or regular mode. If it was in regular mode, it booted to an invisible monitor that I couldn't access. I could login but couldn't see it. The only way to resolve it is to restore system to factory state.
Maybe it's time to get a new one. What's the best deal on a mid to high-end one nowadays??

Thanks,