PC utilities: display

something similar

see i accidentally disabled my NVIDIA Geforce2 Graphics card and the next time i booted it used VGA but then i disabled that one thinking that it would re enable the NVIDIA one but now when i try to boot the system boots but the screen turns blank before it gets to the logon screen. The system seems to be working but there isnt any display. I have tried all the safe modes, enabling VGA mode, using the last good configuration, debugging mode, every single mode but still hasn't worked and i even went into the setup menu and nothing works. I have a Dimension 8200, I am running Windows XP pro SP2, Intel Pentium 4 1.80 ghZ processer, Nvidia GeForce2 MX GPU, BIOS A04. If any one has any suggestions please reply