What type damages can be caused by viruses to your computer?

Q. What type damages can be caused by viruses to your computer?

Answer:-

• Damage or delete files:- Some viruses may delete or damage random documents or specific files that are crucial to your operating system-for example, operating system files. This damage can range from rendering useless just a few files to affecting your entire computer, possibly requiring you to reinstall your operating system and start from scratch.
• Slow down your computer:- Viruses can run in the background, without being seen, and may cause your computer to run extremely slow.
• Invade your email program:- Some forms of viruses may wreak even more havoc by spreading themselves to the contacts in your address book.