We all know how to delete files or move the file to recycle bin, but the files are not deleted thoroughly, if you want to delete those files permanently, follow below steps.
1.Open the folder and locate the file you want to delete permanently.
2.Press Shift + Delete key at the same time, a window will pop up, asking you "Are you sure you want to permanently delete this file? ", the file name and created date information will be listed below. Click Yes to complete the deleting process, if you don't want to do so, Click No.
When your computer runs slower and slower or programs/browsers take longer time to reply, it is time to clean your computer now, a basic method to clean computer is disk cleanup, steps below will tell you how to clean and speed up your pc.
1.Click Start button on the left bottom of taskbar, type clean in the search box.
2.Click on Disk Cleanup, a new window appear, C disk was selected by default, click OK.
3.Disk Cleanup window shows up, system will self-scan, after the scan process, a new window will appear.
4.There will be a files list, temporary files and other files are listed and checked, un-check options you want to delete. Click OK to clean and a confirm window will pop up, clicking Delete Files to complete the clean process.