Computer Hardware is the most popular job in corporate life it is also called desktop support job. In this post, we are discussing details of about this post so let's get started now. Before sharing articles, I want to share my professional experience in the technical field with you because, I am also a service engineer at Apple in Bangalore and also questions are refer by Requiter/HR so let's started now.

Computer Hardware Interview Q&A:

What is Computer ?

Ans: A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web. You can also use it to edit or create spreadsheets, presentations, and even videos.

What is Hardware ?

Ans: Computer Hardware is the physical components that a computer system requires to function. It encompasses everything with a circuit board that operates within a PC or laptop; including the motherboard, graphics card, CPU - Central Processing Unit, ventilation fans, webcam, power supply, and so on. In short, the components which can be touched and fill with bare hands are known as Hardware Components of Computers.

What are the different functions of a computer?

Ans: A function of computer basically work is that taking data and instructions from a user, processing the data as per instructions, and displaying or storing the processed data, are the four major functions of a computer.

These functions are also called as the input function, process function, output function, and storage function, respectively. Simply, Input, Processing, Output & Execution are the four different functionalities on which the Computer system works.

What is SMPS and How to resolve SMPS Issue?

Ans: SMPS is a switched-mode power supply that provides electrical power to all the components of the motherboard. Now, if your computer is dead and not even a single light glows on your Motherboard, the basic need is to check its SMPS. To do so, remove power cable from SMPS and unplug all connections of peripherals (Hard disk Motherboard, DVD etc.) Now you can check SMPS easily by connecting a small wire between green color (PS_ON) and black color wire (COM). After connecting, plugin power cable and switch on the SMPS. If the SMPS fan runs, SMPS is working.

Explain about System Hanging Issues:

Ans: Hardware and Software specification problems can cause random computer freezes and reboots. In hardware there can be issues with the notches of RAM, or some of the cells of RAM can not work properly etc.

Frozen Computer (Computer is hanged) is the one which is completely unresponsive. It is unable to perform any input changes from keyboard and mouse.
We can also face Driver Installation questions in an Interview because mainly if any company is hiring you as an Desktop Support then it will surely check that how you are facing the installation problems. Hardware & software installations are the must which one should focus on while preparing for an interview.

OS Installations - Windows, Linux, Windows server 2016?

Ans:- You can answer by saying that yes I have installed OS like Windows 7, Windows 8, Windows server 2019, & Linux many times with the help of PenDrive and CD's. You should be aware about what are first steps, second steps, third steps & also what are the zero level requirements for installing any Operating System.
Make sure your device meets the minimum system requirements. If we take Windows 10, for the latest version of Windows 10, you'll need to have the following

- Create installation media. Microsoft has a tool specifically for creating installation media.
- Use the installation media.
- Change your computer's boot order.
- Save settings and exit BIOS/UEFI

What is Firmware?

Ans: Firmware is a small piece of software that makes hardware work as it's manufacturer intended it to. It consists of programs written by software developers to make hardware devices 'tick'. Without firmware, most of the electronic devices we use daily wouldn't be able to work. They would not do anything. If firmware is not updated properly than any software or application will not work properly. Updating Firmware is also a risky job because if we are doing it in any laptop then we will need to continuously put it on charge the whole time & also the accurate model number and system firmware should be installed otherwise there are chances of damaging the whole motherboard.

What is SSD?

SSD is a PC storage device that uses Solid State memory to store information.
SSD uses non volatile NAND Flash Memory, which enables it to retain data when the power is removed.
It is a data storage device in a computer.
It is a secondary storage device.
It's stored in 0 (or) 1.
The OS, software and most other files are stored in the HDD.
It was invented in 1954 by IBM.
Now-a-days, HDD comes with 3.5 inch or 5.25 inch platters in different capacities, such as 10GB, 20GB, 40GB, 80GB & etc...
Also there are various differences between SSD & HDD. Like SSD provide good speed of data transfer while HDD takes time compared to SSD. SSD are expensive in comparison to HDDs.

What is BSOD ?

Ans:- Blue screen Of Death or Blue Screen Memory DUMP (BSOD) is an error screen that is displayed before the system is rebooted. The reason for this kind of error are issues in Hardware or any Software.

How to fix :

Fixing a blue screen memory dump will be specific to correcting the error which is displayed on the screen.
Find information about your particular BSOD, and then search the internet for more practical advice.
Begin dump of physical memory error is one of the error occur due to RAM problem.
Blue screens are caused due to hardware and software problems.

Why is there no power in the Display ? / Explain No Display Issue.

Ans: Due to the following reasons the Display is not showing Power :

Power Cord not connected properly.
Faulty power supply source.
Third party hardware.
Defective power button of cabinet.
Faulty power supply unit.
Motherboard not functioning properly.

What is RAM ?

Ans: Random access memory (RAM) is the best known form of computer memory. It is one of the best memories of our Computer.

RAM is considered as volatile memory, which means that the stored information is lost when there is no power.

RAM is made up of small memory chips that form a memory module.

Whenever you open a program, it gets loaded from the hard drive into the RAM.

This is because reading data from the RAM is much faster than reading data from the Hard drive. Also, the frequently asked question is what are VGA & HDMI. So while preparing for an Computer Hardware Expert interview, one should keep in mind the all above mentioned questions. They are sure shot questions which the Interviewer will ask you.

What is Hardware components:
Ans: Hardware components are the physical parts of a computer system — the ones we can touch and see. The main components there are some components following here:

Motherboard – It’s the main circuit board that connects all components together.
CPU (Processor) – Also called the brain of the computer; it processes all instructions.
RAM (Memory) – Temporarily stores data for quick access while the system is running.
Hard Drive / SSD – Stores the operating system, software, and user files.

Power Supply Unit (PSU) – Converts electricity into usable power for the components.
Monitor – Displays the output from the computer for user helpful.

Keyboard,Track-pad & Mouse– Used for user input that is also called Input device of computer components.
Cooling Fans / Heat Sink – Keep the system cool and prevent overheating using in Motherboard.
Graphics Card (GPU) – Handles visual output, especially useful for gaming or design tasks using in Motherboard.

Together, these components allow a computer to work smoothly and efficiently.”

Note: Under Working.................

I hope this all are questions helpful for your interview, then please follow me and share your experience with the help of comments .