|This issue can be caused by any of the below possibilities.|
Not enough hard disk space.
Left over programs and bad files.
Missing Windows updates / Outdated drivers.
Computer is overheating.
Run your antivirus program. There may be something slowing your computer that you can remove. It is a good idea to run your antivirus program every week. Run the Disk Cleanup tool located in your Control Panel. (Windows only. For other operating systems, please check the Resources section below.) This will remove temporary files, cookies and unnecessary components to speed up your computer. Defragment your computer. Defragging takes some time, but will speed your computer significantly. You can find the tool in your Control Panel. Run it monthly.
Check for disk errors. Sometimes corrupted files slow down your computer. To find and fix these files, Go to My Computer and right-click on C drive. Choose Properties, then Tools.