Nvidia video driver problem

[Narawa]

I am using Fedora 13 (64 bit version) on my machine with GeForce 7950GX2 video card.
I have been using dual screen through nvidia driver with no problem.
However, I installed some packages last night (I do not know which one of them are causing problem, if they are, because I installed so many of them) and now my screen is massed up.
First of all, my dual screen is not working (I get same screen on both monitors) and size of all the fonts are bigger.
I tried to fix the setting by using the nvidia driver but it just keep telling me I need to fix my x server.
I did what the driver told me to do but there is no change and just keep telling me same thing
I even followed the steps listed in the following link but did not do anything ( http://forums.fedoraforum.org/showthread.php?t=204752 )
Could anybody help me with this situation?
I do not know if this is going to help but when I boot my computer I get a triangle sign on the top of the screen which says:

Checking for module nvidia.ko: [FAILED]
nvidia.ko for kernel 2.6.33.3-85.fc13.x86_64 was not found. [WARNING]
The nvidia driver will not be enabled until one is found. [WARNING]

and

Starting kdump: [FAILED]


Thank you.

[glennzo]

Probably got a kernel update. That would mess up the NVidia drivers for sure. Can you try booting into the older kernel?

[Narawa]

Originally Posted by glennzo

Probably got a kernel update. That would mess up the NVidia drivers for sure. Can you try booting into the older kernel?

I do not know how to boot into older kernel... could you tell me how please?

[glennzo]

If there was in fact a kernel update there will be at least 2 "Fedora" choices in the boot menu. The second one listed will be older than the first one listed.

[dth4h]

When you boot up your computer hold down the "Shift" key until you see the Fedora grub menu (which should be blue), then select the Fedora with the lower kernel number. Hope this helps