The best way to guard against malware is to install antivirus software, such as Bitdefender, Norton, or Kaspersky. Antivirus software helps to prevent malware from being installed, and it can also remove malware from your computer.
You can purchase an external hard drive and copy the contents of your computer to it. The initial backup could take several hours, so you will need to select a period of time when you do not need access to your computer. Running the backup overnight usually works best. Follow-up backups should be conducted on a regular basis, but they should not take as long.

One drawback is that an external hard drive can be lost, damaged, or stolen—just as your computer might be. This is why it's important to keep your drive in a secure location when not in use.
To keep your computer running smoothly, it's important to keep files and folders uncluttered. Cluttered or unorganized folders make it more difficult to find the files you need. Additionally, unwanted files can eventually fill up your hard drive, which will make your computer slower and more difficult to use. Here are a few things you can do to delete unwanted files and improve your computer's performance.