No audio on my Dell laptop

Hi All,
I have no audio on my laptop, although it detected no problems. I also had a functioning driver. I tried a solution. I uninstalled the driver and restarted my PC. Windows reinstalled my driver on startup and I could hear the sound. But that was only a temporary solution. When the PC was shut down, there was no audio when I restarted it. So whenever I have to get audio, I have to uninstall the driver and restart my PC to get sound. Can I get a permanent solution to this problem?
Thanks.