|Do you empty the recycle bin regularly? Until the recycle bin is emptied, the deleted files are still taking up space.|
Download CCleaner-Portable. Unzip it, open the folder & double click on CCleaner.exe. Run the cleaner & remove everything it finds. It you don't regularly clean your system, it may take several minutes & will free up several GBs of space.
As for your sound problem, we would have to know the make/model of your computer, or make/model of your audio card, to be able to help you to find the correct drivers.
message edited by riider