How to keep your old one running like new?

I am bias and would higher recommend a change of OS and if you want to stay with an OS close to Windows, try Linux Mint. As I said I am Bias, Windoze in no way can compare to Linux in my book. I came from Windows 10 years ago and though we still run one Windows System in our company, we have changed to Linux on all our desktops,servers, and websites. Full control of your system and far better programming environment.

Keep Updating your Windows. Regular check for Malware.

If you've been using an old computer, you can buy a SSD to make it fast as new and move your windows from HDD to SSD.

Thank me later!

Upgrade your window. keep your system out of a virus. Clear the cache memory. Your RAM will be at least 8GB.

get upgrade it every year

What I do is, apply thermal paste to the CPU heat sink every 1-2 years, installed new power supply, make sure RAM is fast enough to handle your needs, older PC's might only have min. of RAM installed, make sure (device drivers) all components are up to date, start up items are only necessary 1s to load, run good anti spyware + malware in Safe Mode + clean up junk files, if files are large compress them. I also am an affiliate for a PC co. that shows you how to repair + optimize desktops + laptop

by renewal.......may help

Please upgrade your computer with some hardware such as RAM and SSD

You have to up grade every few years

Get updates and take help of antivirus software such a mcafee, office setup or norton choose of then and rid out of this kind of issues and keep your old one like a new one.

Maintenance your operating system...............

os change to linux maybe

Maintenance and apying attention to any detail or any funny new thing that happens or reveals itself in your merch

by renewal.......may help

Protection from Trojans may help...

Maybe a solid state disk will help :)

You have to up grade every few years ..........

Have a look for special software to help you. There are programs which even in the free version do good service.

Use good security software. Clean computer regularly. Don't install unwanted software. For windows users, try to clean install the OS in every 6 month or use windows update as clean install.

Try to clean your Laptop at first: Get rid of junk files, safely clean your registry files and run disc defragment.