Microsoft Windows provide inbuilt tools like Disk Cleanup,Optimize and Defragment Drive and Scan for errors options to gain Hard Disk Drive spaces. You can also use software instead of these inbuilt tools. Software like 'CCleaner' will clean all temporary files,browsing cache etc.Using 'Defraggler' will make make your drives error free and help running your PC smoothly.Both software are provided by "Piriform".You can also download it. #1. Use of Disk Cleanup. Disk Cleanup will wipe out all Temporary internet files,thumbnails,Windows error files etc.Disk Cleanup will appear by right clicking on your C drive > Properties > Disk Cleanup. You can also use CCleaner to wipe out temp files as shown below to gain space. Use these three commands in Command Prompt one by one i.e. #1. prefetch #2. temp #3. %temp% Select all the files and delete them.This will also keep your PC running faster. #2. Using 'Optimize and Defragme...