The basic parts without which a computer cannot work are as follows:
Processor: It executes instructions from software and hardware.
Memory: It is the primary memory for data transfer between the CPU and storage.
Motherboard: It is the part that connects all other parts or components of a computer.
Storage Device: It permanently stores the data, e.g., hard drive.
Input Device: It allows you to communicate with the computer or to input data, e.g., a keyboard.
Output Device: It enables you to see the output, e.g., monitor.