The graphics card in that type of computer is a mobile one...not your run of the mill PCI-express that can be replaced. It is going to be integrated onto motherboard, which means the entire board would need to be replaced. These all in ones are like laptops...the only things that end users can replace are hard drives and memory. If you still want to crack it open, remove all the screws ... lay it face down ... and pry and lift from the bottom up ... the back is firmly snapped on. It's pretty delicate work, and without the right tools, will almost certainly scratch the edges.
do you have any clue as to why my computer is acting so strangely?
in the control panel under device manager ... it says the display adapter is not working properly. When I uninstall the driver the NVIDIA adapter disappears completely.
correct, if you uninstall the adapter, it will disappear until a reboot, at which time, it should redetect it.
Did you do anything like windows updates or install anything before the problem started?
I don't believe so. I added a wireless trackball but I removed that thinking it was the problem. Things just keep getting worse. Now when I boot up it only sees the standard graphics adapter. I even tried uninstalling that but it just reinstalled upon reboot.
you probably need to just update the drivers. Click on the following link...then click under video. There are three different chipsets for your model. Pick the driver that is closest to the video card you think you have, and install it.
I have tried updating the NVIDIA driver ... I get the message that the driver is up to date.
I went to the link you gave me but it only lists INTEL drivers. I am trying to get the NVIDIA driver/card to work. Are they the same?
Well, I am confused about the model number. The number on my computer is PCG-281L but when I try to look that number up Sony directs me to model VGCLT10 ...