This acts as a blanket to hold in the heat and cause your components to run hotter than necessary, and can contribute to temperature-related failures. Hard drive maintenance . Hard drives accumulate programs much like your at home garage seem to attract junk. About once a year, you should have a competent technician assist you in determining what can safely be deleted. Sometimes programs can be uninstalled multiple times yet remain on the drive.
Files can become fragmented or damaged.
This sometimes necessitates a clean install, especially under Windows 95.