Hello Shadow and welcome to Seven Forums.
Is it possible the speaker(s) got damaged/torn? If the speakers are physically OK I'd check to make sure you have the latest Realtek driver
installed. Open device manager and see which version of the Realtek HD Audio Manager you have. It should say something like PCIe GBE Family or FE Family. Then use the Realtek download site to get the latest driver. While in device manager you could also open all the other + signs to see if any other devices need updating. Please post back if this helps. Realtek