Hello friends I am going to tell you most important thing in case of performance there you should be careful in while handling notebook. I listed this thing that will useful for you.
1.junk cleaner is good thing to do on daily bases which gives you good speed because it removes unnecessary used memory of ram or rom.
2.in pc remove the case panel on a laptop or notebook and clean the case interior.
3.use cotton swab to clean the exterior case of notebook.
4.clean the keyboard and mouse or display screen.
5.install anti virus software.
this thing work better if you do it properly.
thank you.