Posted 29 October 2011 - 02:52 PM
If you purchased a graphics card, chances are it was a PCI-Express x16, not an x1. Is the socket size very small (like an inch) or long (several inches)?
Make sure, after installing the graphics card, that you connect the cable from your monitor to the new output port on the card, not to the onboard graphics output port.
If you still do not see BIOS when booting with the onboard graphics card, it is possible that the DELL is built in such a way that it will not boot without working onboard graphics ... in which case you may need to replace your motherboard, or it may be time for a new computer altogether (though you can keep your hard drive to get the data off of it then use it as an extra hard drive, or go through steps to recover the data separately and only use that hard drive).