How do you get the sound to work on a computer after the computer has crashed?

Look on your mother board of your mainboard inside you computer look for the model number and maker and go to there website and go to driver downloads and type in the model number. Then download the latest sound driver and install.

If your machine is a branded one (HP, Fujitsu, Acer, Asus, Lenovo etc), just go to appropriate website, search "support" and there download drivers. Choose the operating system and download and install drivers.

Another way to find the sound driver for Windows 2000, XP, Vista, 7, 8 or 8.1 is to first go to Control Panel. Then ungroup the Control Panel so that it shows large or small icons (grouping makes things harder). Search System icon or Devices icon (usually looks like a computer) and open it. Go to device control and search for unknown devices (those have yellow exclamation mark). Right click on device select "properties". Search Device Instance Id.

There should be a PCI\VEN_XXXX&DEV_YYYY&SUBSYS.... Write down the XXXX and YYYY hex codes. Then write the code to search engine in form XXXX:YYYY, you will find the exact hardware and download the driver for that.