Computer hardware is the collection of physical parts of a computer system. This includes the computer case, monitor, keyboard, and mouse. It also includes all the parts inside the computer case, such as the hard disk drive, motherboard, video card, and many others. Computer hardware is what you can physically touch.

The parts of the computer are called hardware hardware are the pieces of technology that attach to the computer.These devices can include printers,the hard drive, CPU, RAM chips

A malfunction within the electronic circuits or electromechanical components (disks, tapes) of a computer system. Recovery from a hardware failure requires repair or replacement of the offending part. Contrast with software failure.