I really don't understand what's going wrong.U should really try again
Okay, follow these steps.
1-) If it's possible reinstall slackware and take 3. step
2-) If it's not do in root console:
and then remove all the xorg.conf files with rm "/path/to/xorg.conf"
3-)Boot to console and login as root
4-)Run "xorgconfig" ,
-choose Nvidia Geforce for card
-don't forget to manually configure your monitor's refresh rates.(just google to find your monitors refresh rates).
-while configuring desktop resolutions,make sure that u have maximum 1024x768 in all color modes.
It will ask if you want to save "/etc/X11/xorg.conf" ,don't forget to say "YES"
5-)run nvidia-drivers by typing:
-make sure that the installer can't find "a precompiled kernel module" and that it will compile it from scratch.
-Look for the "succesfully installed" sign
6-)in /etc/X11/xorg.conf change
Driver "nv" //or vesa
in the module section you should have:
you should also remove these lines:
7-)Reboot your computer and login as root then type
8-)Now, u can use some non-root user to use x server