Trying to figure out what to do with this graphics card that will not fit in my computer

Some computers have two sockets but only one at a time can work. A guaranteed way of running two monitors is to fit a graphics card with dual outputs. Often by fitting a card it switches off the onboard graphics.

I think you're asking for trouble. The specs at the link you gave recommend at least a 300-watt supply. By the time you figure in the normal load of everything else in the system, there probably won't be enough power from the 250-watt supply to let the card work reliably, and may affect overall system operation. One of the problems with small form-factor computers is that they often use a proprietary power supply to fit the case, and you can't replace it with anything larger. This limits expansion capability. I'd suggest saving your money.

just check what motherboard version your computer is running on and just advise the supplier to supply you with a graphics card that well fits for that motherboard.....

check that all cables are securley fitted to your drives . try unistalling the graphics card , boot up the computer , if it boots up then you will need to install the drivers that came with the graphics card first

the adapter u are using is pci express and the dell dimension 9100 are not compatible.. try returning it for either a pci (usually the white slot) or AGP which in most cases is brown.. the AGP will be your best performance.. if return is not an option.. then it seems that a new pc is in your best interest.

Be sure that your video card fit on you os, as you said its 64 bit. Try to work in bios, or just reformat your sytem.

Graphics chips on laptops are usually part of the motherboard and therefore cannot be changed.
Your only choice is to get a new and usually a better laptop.

Most desktop computers can accomodate new graphics cards by installing them in AGP or PCI slots, most modern graphics are AGP type cards.

you probably have a video card already in computer either on the M/board or i a slot check device drivers any with a yellow mark do not have drivers installed right click and go to properties new popup go to driver update it should go on the net to find them

Go to a shop that has computer guys and ask them. You're probably going to need to do some mesurements and then consult with someone at a computer hardware store.

troubles and tribulations of the compaq approach to board level expansion bus cards..been like that for millenia...

what kind of monitors you using?