You can actually order parts directly from dell. If you click on the link that says "Support for Dell Inspiron B130" it will bring you directly to their website. Then just click on parts and accessories on the left.

You can follow the troubleshooting guide for more info. First check to make sure that the plug your charger is plugged into is working by plugging something else into it. If it is, and your computer is not turning on, the issue is most likely with your charger. It is a common issue with this model computer that the AC adapter is faulty.

It sounds like your speakers are blown. You will need to replace them. You can order parts from the link titled "Support for Dell Inspiron B130" and by clicking on parts and accessories.