thebreadboy wrote:I have an Inspiron 8500 with an Nvidia GeForce 4200 Go video card installed. The the video stopped working the otherday. How do I determine if the problem is a bad video card or bad motherbooard. Here is what happens. When I power on the computer the screen flashes a bit with verticle bands of lines at different parts of the screen. After a minute or so it eventually fades to white. occasionally when I power it up I will see the Dell splash screen but there is a flickering and garbling of the image. When I move the mouse pointer, it will also start the flickering and garbling.The screen that asks me if i want to start the computer in safemode or normally appears. If I select safemode, I will eventually get the desktop but there still is garbling and flickering, more if I move the pointer. When I start the computer normally however, the computer will ultimately freeze before the desktop is loaded and then the screen will fade to white.I hooked up the computer to an external monitor and the problem is also there. The only difference is that it seems is that the dell spash screen appears more often although still garbled and flickering as it is when I am able to get it to appear on the laptop's LCD panel. Also, When I do start in safemode I am able to get the desktop to appear on the external monitor however when i try to start windows normally the monitor will lose the video signal and the computer again freezes.Note the differnce between starting in normal mode using the external monitor and the lcd panel. they both ultimately freeze but the external monitor loses its signal and the LCD panel faded to white.So, I am confident that this is not a bad LCd Panel. I believe that it is most likely a bad video card, But i want to be certain before I spend the money on the card. Can someone let me know how to exclude the motherboard as the problem. Thank you.Oh, lastly is there a connector addapter that is available that will let you connect the LCD panel to a video source to use it a a monitor for a computer or other video source. thanks again.