1. Press Ctr + Alt + Esc which will open your task manager. Go to startup and disable all startup programs and restart.
2. Run a full virus scan just to make sure nothing else is running in the background.
3. You are most likely using a mechanical hard drive, Upgrade to a 120GB-500GB SSD Drive depending on your needs (range from 40$ to 150$) and Upgrade your Ram to 8GB at least.
4. Laptop is pretty low end, however, SSD should make the operating system run quickly, but your games will still run the same, but load faster. Most people are very satisfied with the transition to a Solid State Drive and you will find it is impossible to go back to your old drive.