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All in One computer with flaky video card

A

amanoai

Member
I picked up an All in One Averatec computer. Someone tossed it out because the screen is showing vertical lines across it. Looks like the video card is going. I popped the rear off and the video card is an Nvidia, I think it's 8400M GS. This is the first time, I've seen the inside of an All in One computer. I'm trying to locate another video card to swap out but I can't find the type. The connection is like a slot. No wires, no cables. Anyone have an idea?
 
You're most likely looking at an MXM II card. Slim gamin desktops (like HP's falcon that used dual 8800GT in SLI used to of these watercooled MXM cards) and some laptops used them. You can try this, though sometimes the cards have specific flash that only work on certain computers. May need to see if Avertec used a system like that.

http://cgi.ebay.com/Nvidia-Geforce-8400GS-MXM-II-/170614509767

Have you checked that the issue isn't with the display itself? The converter board that runs along the top of the LCD (where the ribbon cable goes) is frequently the cause of this issues. There's no repairing them (tons of really small wires) and they are a personal gripe of mine because of their failure rates leading to so much e-garbage, seeing as that one cheap piece makes the entire panel useless. Nevertheless, thy squeezing gently on various places of that board. If the lines change or it clears, you know it's the panel and the only thing that will fix it is a completely new panel.
 
heymrdj, hit it on the spot. Looks like that, so I guess it's MXM.

I'm not sure if it is the display. The lines show up on the screen right from the start, even in the BIOS. Between the BIOS and the Windows loading screen. The display clears up, no lines, but shows gibberish characters repeated all over, in the Windows loading screen, the lines reappear. Currently, I can't enter Windows normally. It just reboots. I can however go into Safe mode. I just see the lines all across in the desktop.
 
That sounds like the panel to me. Like I said, squeeze along the top, or wherever the little green logic board runs (sometimes top sometimes bottom, just find it wherever the ribbon cable runs from the MB to the monitor). See if that changes it. If it does, you'll need to see who makes the panel (normally LG, Phillips, or Samsung), and then try to hit up the bay for a replacement.
 
Ok, I've tried squeezing and pushing on the different areas of the panel/display. I've tried wiggling the various wires and cables to see if they were loose, etc. Nothing. The computer will not boot at all in normal mode, only in safe mode. I've tried updating to the latest Nvidia drivers, rolling back, either helped. I do notice when I move the mouse around, some of the lines disappear and reappear. Booting up the computer w/o the video card in place, the display is all white, no lines.
 
There might be a button combonation you have to push since it's based on laptop parts. Most laptops require a Fn+Fkey to actuate that, but that also requires a driver that's loaded in windows.
 
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