Can unsigned drivers cause constant error messages

  HAYESBOY 12:36 30 Sep 03

I keep trying to play CM4 OR CM01/02. When trying to play CM4, error messages keep causing the game to stop and when playing the previous version of the game, i just get thrown out of the game to the desktop.
I also tried to play a demo game(URT 2003)and that throws me out to a bug report.
I have downloaded the latest windows updates and the latest NVidia drivers, but i know at one point i had an unsigned driver for C-MEDIA 3D AUDIO software. I got rid of that and downloaded a signed driver and still i get the same problems.
My spec is P4 2.66Ghz 512mb 40GB FX5200 128mb ASUS 9520.
I have also carried out a directxdiag and have the report, but i havent a clue what i am looking for. I also have a log of all the times that the errors have occurred.
Can anyone help please.

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