Top 44 Computer Technical Support Interview Questions You Must Prepare 06.Dec.2023

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

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


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.

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

  • 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.

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.


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.

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.


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

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.

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.

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

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

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)

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.

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


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.

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

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

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.

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

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


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.

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

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

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.


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>

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.

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

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.

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.