What Is a Computer Virus? A computer virus is a program. Like other programs, it’s defined by what it does, and the big thing a virus does is replicate itself.

Viruses have been known to cause system changes that affect external hardware and accessories. Computer operating by itself Computers should not be executing demands without authorisation.

How to effectively remove malware or a virus from your computer with these essential steps to restore your system's security and performance.

If you think your computer has malware or a virus, you may be tempted to perform a factory reset on your PC. But is this an effective solution?