Often you will be experiencing slow down in computer speed at start-up, it is because you will have lot of programs at your start-up. If you can disable those unnecessary programs, you can gain speed and run smoothlyt.
To disable Windows start-up programs without any special software application, Please follow this procedure:
Step1: Open Run by hitting win+R on your keyboard or by clicking on start button
Step 2: Enter msconfig as in the below function and hit Enter
Step 3: Now navigate to startup , there you will lot of programs with tick marks, which are currently enabled at startup.
Step 4: Now un tick all unnecessary programs (Application Software installed by you) without disturbing the windows services as in the below picture.
Thats it, now click on ok and enjoy.