I just recently rebooted my computer but since then my computer has not been able to detect the sound card saying that there is no sound card so no audio can plau i even bought new speakers nothing worked i dont noe the manufacturers of the soundcard or the computer i dont know what to do!! CAN ANY ONE HELP ME

You need to ID the computer and or motherboard.

Try Belarc.

What is under System Model as well as Mainboard?

The manufacturer will have the audio drivers on their web site.

Yeah i had the same problem myself.
Have you tried checking the sound card is fitted properly?
I unplugged mine and reinstalled it then run through the add hardware on the control panel.
The Belarc will give you an over view of what your computer hardware is.
Best of luck.