|I believe that TRA Computers is a business that just fixes computers. They may even upgrade and sell refurbished models to customers. However, unless they build computers from scratch, they are not the maker of your computer. |
If you have a desktop, look on the side and front of the case. You should see a logo somewhere such as Emachines, Dell, Gateway, etc,. This is the company that will most likely have your sound drivers available. Especially if you can find the model of your computer (ex. hp Pavillion xxxx)
Once you find the make and model of your computer you will need your device information. I recommend what wanamingo stated: Right click 'My Computer' and select 'Properties'. From there select the 'Hardware' tab and click on 'Device Manager'.