Top 44 Computer Technical Support Interview Questions You Must Prepare 24.Jun.2024

Q1. A User Calls And Says That Whenever He Starts His Computer, It Boots Up Only In Safe Mode. There Is No Other Error Message. What Would You Do To Fix This Problem?

Go to Msconfig and select Normal Mode and Restart the Computer.

Q2. You Are A Desktop Support Technician. A User Calls And Complains That Till Yesterday He Was Able To View His Cd Drive In His Computer. But Today When He Turned On His Computer, He Is Not Able To View

Open the Windows Registery Editor and Delete the Upper and Lower Filter Keys.

Q3. What Does Boot.ini Do?

Boot.ini lists all the Operating Systems present in the computer and provide information about which partitions they are located on.

Q4. What Would You Check If There Is No Sound From Your Computer?

(Audio not working)
@Check for cable connections
@Check for power to the speakers
@Check for volume control
@Check for device drivers


Q5. Lights On A Modem / Lan Card

Generally, there are 04 lights. They indicate the following:

  1. Power Light: Shows if the device (Modem)is getting Power Supply or not.
  2. Link Light: Indicates if the device is getting broadband/internet signals properly from the ISP.
  3. Data Light: Indicates wether the internet is working or not.
  4. Connectivity Light: Indicates the Modem is connected to a PC or not.

Q6. You Suspect That Your Computer Is Failing Because Of A Corrupt Master Boot Record. Which Utility Is The Best To Fix This Problem?

Recovery Console (By Using the fixmbr command)

Q7. What Is Over Clocking? What Are The Advantages Of Over Clocking?

It is a process where the computer component is forced to run at a higher clock rate.
The advantages of over clocking are:

  • Increases the CPU’s performance
  • It is cost­saving
  • Makes PC games and Applications to run faster

Q8. What Are The Components Needed To Setup A Basic Home Network?

LAN Cards, LAN Cables, Router/Hub

Q9. Some Functions Of Bios:

  • Performs a POST (Power­On Self Test) for all the different Hardware Components in the System to make sure everything is working properly.
  • Activating other BIOS Chips on different cards installed in the computer, for example, SCSI and Graphics Cards.
  • Provides a set of low­level suiting that the Operating System uses to interface different Hardware devices.
  • BIOS manages things in your computer like the Keyboard, Monitor, Serial and Parallel Ports especially when the computer is Booting up.
  • Manage the settings for Hard­disk drives, System Clock etc.

Q10. What Is The Command To Convert A Fat32 File System To Ntfs? Would There Be Any Loss Of Data?

The command is: CONVERT <Drive Letter>: /fs:NTFS. There will be no effect on the data. (Data will be safe).But remember this: if you want to convert NTFS partition back to FAT32, you will have to re-format that partition and select the FAT32 file system.


Q11. Very Frequently, Users In Your Office Put Floppy Disks In The Drives And Forget To Take Them Out. This Results In Boot-up Problems And Results In Support Requests. How Would You Stop This Computer Fro

Change the Boot Order in BIOS.

Q12. Which Utility Is Used To Do A Software Clean Boot?


Q13. What Is A Data Cable?

A Data Cable is a Thin Plastic band­like cable used to connect the Data­Devices like Hard­disk drives, Floppy Disk Drives, CD/DVD­ROM drives with the motherboard. Data Cables are primarily used for Data Trfer.

Q14. After Restarting Your Windows Xp (professional) Computer, Your Monitor Shows A Blank, Blue Screen. You Remember That A New Video Driver Was Just Installed. What Would Be The Best Way To Fix This Probl

Restart the Computer, Keep tapping on the F8 Key to go to the Windows Advanced Options Menu and select the option “Last Known Good Configuration” and hit the <Enter> key.


Q15. Why Are Device Drivers Required?

A Device Driver (or just Driver) is a piece of software which is requied to run every Hardware Component present in the computer.

Q16. What Is The Command To Start Windows System Restore From The Command Line?


Q17. What Is A Parallel Windows Installation?

When the first installation of Windows fails to boot for some reason, another copy of Windows is installed in teh same drive but in a different directory (so that the customer can access to and backup his old data). This is called Parallel Installation of Windows.

Q18. What Is Jumper And Why You Need It?

Jumper is a metal bridge that closes an electric circuit. A jumper consists of a plastic plug that fits over a pair of protruding pins. It is used to change the board’s parameters.

Q19. What Does The Term Uac Stand For?

UAC stands for User Access Control. For more information read this article.

Q20. What Are Rj45 And Rj11 Connectors?

RJ45 connectors are used for LAN/Ethernet connections and RJ11 connectors are used for Telephone Cable connections.

Q21. You Are A Desktop Support Technician At Eqs. One Of The Customers Has Just Installed A Brand New Printer For Himself. This Customer Calls You After Some Time And Says That Every Time He Tries To Print

The customer has installed an Incorrect Device Driver for the Printer. I would uninstall the driver, from the WIndows Device Manager and install the correct Device Driver for the Printer from the Disk that came with the Printer. (If the Disk is not available, I can still download the correct device driver from the manufacturer’s website)

Q22. What Is Sata?

SATA stands for Serial Advanced Technology Attachment. It is high speed computer bus interface designed to connect the host bus adapters to mass storage devices, such as hard disk drives and optical drives.

Q23. How Would You Access The Recovery Console In Windows?

By booting with the Windows XP CD and following the on-screen instructrions. The Recovery Console can also be installed in your computer.

Q24. You Need To Dual-boot A Computer With Windows Xp And Windows Me. You Need All The Partitions To Be Accesible From Both The Operating Systems. Which File System Would You Use In This Scenario?


Q25. Sequence Of Things Done By The Bios When You Turn On Your Computer:

  • Check the CMOS for Custom Settings.
  • Load the interrupt Handlers and Device Drivers.
  • Initialize Registers and Power Management.
  • Perform POST (Power On Self Test).
  • Display System Settings.
  • Determine which devices are Bootable.
  • Initialize the Bootstrap sequence.


Q26. What Does The Term Usb Stand For?

USB stands for Universal Serial Bus. It allows devices to be connected or disconnected from a computer without shutting down or restarting the computer. The current version of USB is 2.0.

Q27. Explain The Cache Memory? What Is The Advantage Of A Processor Having More Cache Memory?

Cache memory is the memory area between Processor and Ram. If the cache memory increases, the speed of the system will also increases.

Q28. Difference Between A Workgroup And A Domain?

In a Workgroup, all the computers function as Peers. But in a Domain, One computer is the Server and the others are Clients.

Q29. What Is Heat Sink And What Is The Use In The System?

To lower the temperature of a device, a heat sink component is used. It is there on the microprocessor and if it is not functioning well then the computer will shut down automatically.

Q30. What Are The Different Types Of Dram?

The different types of DRAM are SRAM, VRAM, SGRAM, DDR­SDRAM

Q31. You Have Norton 36

Reconfigure Norton Firewall to allow Internet Explorer to access the internet.


Q32. What Is Chipset? How Is It Different From Processor And Motherboard?

Chipset is one of the processing devices in a computer. It is a number of integrated circuits, designed to control how information travels between other components and processor. It is a group of microchip to work as a unit to perform one or more related functions. While motherboard is where all other components like CPU, Memory, Sockets for external connectors and drives are attached. Chipset is a built in feature of otherboard. While, processor is a main integrated circuit block, which does the function according to the instruction of a computer program. It is based on the logical, arithmetical and input/output of the system.

Q33. What Is Ping?

Ping is a command that checks the connectivity with an IP address.

Q34. What Is The Difference Between Fat32 And Ntfs File Systems?

  • NTFS allows compression and file encryption. FAT32 does not.
  • NTFS is more secure than FAT32

Q35. You Are Configuring Power Management On Your Windows Xp Computer. With Acpi, Power Management Should Be Under The Exclusive Contol Of:

The Operating System

Q36. What Are The Features Of The Disk Defragmenter Tool In Windows Xp And Windows 2000? Does The Windows Xp Version Have Any More Features Than The Windows 2000 Version?

The features of the Disk Defragmenter Tool are the same in both Windows XP and Windows 20@They are:
@Enhanced Analysis Functionality.
@A Compression option.
@Increased Defragmentation Option and an Automatic Defrag-Scheduling Option.


Q37. What Is An Ip Address?

An IP address is a unique numerical identifier of every device on a network. A typical IP address can look like this: detect a computer’s IP Address, go to Start – Run – Type in CMD in the Run Dialogue Box and click OK or hit <Enter> – In the Command Prompt Screen that comes up, type in IPCONFIG and hit <Enter>

Q38. Which File Must Be Located In The Root Folder Of The Active Partition For Dual Booting Of Windows Xp And Windows Me To Boot?


Q39. A Customer Calls And Says He Is Unable To Get Online. He Uses A Cable Connection To Connect To The Internet On A Windows Xp Computer. You Ping On His Computer And Get The Results That All Th

Rebuild the TCP/IP Stack in the users computer

Q40. How Will You Cope Up With A Customer, Who Complains About A Brand New Printer And System, And Yet Failing To Get A Proper Print Copy?

The first thing I will ask the customer, whether the system is properly connected with the printer. The next thing would be to check the Device Driver. Many times it happens that if you install an incorrect Device Driver, the print copy would not be clear.

Q41. A Customer Running Windows Xp (home Edition) With An Antivirus Application Installed Reports That He Has Downloaded A Program From The Internet And Installed It In His Computer. After Installing The P

Download the most recent virus signature files and scan his computer for viruses.


Q42. What Is Dhcp?

DHCP stands for Dynamic Host Configuration Protocol. It is used to generate & provide IP addresses to the computers on a network.

Q43. What Is The Difference Between Crt (cathode Ray Tube) And Lcd (flat Screen Monitors)?

CRT Monitors: The Monitor has a picture tube and uses a light­gun to highlight pixels on the screen.

LCD Monitors: These monitors do not have a picture tube and contain a layer of liquid crystals on an Electronic Board.

Q44. What Is The Blue Screen Of Death (bsod)?

A Blue Screen of Death (or just a Blue Screen Error) is an indication of a Critical System Problem wherein the Computer freezes altogether and does not respond to anything.To rectify this problem, try Restarting the computer or Booting into Safe Mode.