I am not so genius but i will tell u the things i do to keep my pc's performance better.Hope this simple steps will help you. 1. Use a software Ccleaner,You can google it and you will get it for free. 2. Use disk defragmenter.It improves the access speed of your PC or laptop by.To use this Utility go to Start ->Programs->Accessories -> System tools -> Disk Defragmenter.Use this utility once a week. 3. Do not keep any unnecessary softwares in your pc/laptop.Just Uninstall them time to time. 4. Scan your PC/Laptop Once a week with Antivirus,Antispyware and Anti-malware softwares. I recommend you to use Malware bytes, Spyware doctor and Kaspersky. 5. Keep your CPU fans and all the parts clean.Dust can be dangerous sometimes.