Sometimes you have a lot of programs running that you don't even know is running. What you can do is to press Ctrl, Alt and Delete on your key board all at the same time and a Task Manager window will pop up, then click on the tab that says Processes, where you will see the programs that are running. Look under the title that says user name and you will see which ones are running under your name and the ones that are running by the system. Don't do anything with the ones that says system. You can delete the ones that has your name that you are not using. Sometimes they are programs that are still running even after you think you have closed them. You just click on the one you want to close and click on End Process and it will close it. Do that for each one you want to close. When you are done, just close that window. Also, when you are on the internet, click on tools, internet options, a window will pop up and there will be tree tab in the middle, click on the one that says settings, then click on view files, a list of files will show up, delete them by click on them one at a time then just hit delete. There can be a lot of little areas of your computer, which can cause it to slow down and can be improved if you clean it up. Wish you all the best.