HELP!!! System messed up!

[John Aldrich]

A little while ago I inadvertently killed power to my F15 box. Now I'm  
unable to get a better screen size than 1024X768 (previous was  
1280x1024) as well I'm having problems with my keyboard and mouse. The  
keyboard will suddenly not work any more (i.e. I can't type) and the  
mouse will somewhat work -- I can open a new console, etc, but I can't  
make that the "active" window.

I have already tried using the nvidia-xconfig, but that screws it up  
worse. (yes, I have an nVidia graphics chipset -- driver is noveau  
according to /proc/modules)

If I have an xorg.conf file it REALLY hoses the system and I don't get  
ANY graphics whatsoever and I have to rely on SSH-ing into the box to  
init 3, delete the xorg.conf and restart x, at which time it's  
somewhat normal.

Anyone got any ideas what the heck I did and how to fix it?