Head office, Rana Pratap Bagh, Delhi011 2721 1512+91 97116 99511

Course family

Hardware & Networking

Learners who want hands-on technical work

Assemble, maintain and repair computers, set up networks and repair mobile phones.

Ask about fees and batchesCall 011 2721 1512

Duration, fees and batch timings are quoted by the head office or your centre.

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In this family

  • 3courses
  • 4study books
  • 28lessons
  • 140practice questions
  • 11free ebooks

The courses

3 courses in this family

What each course is about, who it suits, what you practise and the study material that comes with it. Each course has a full page with every lesson, sample questions and admission details.

  1. Learners who want hands-on technical work

    Hardware and networking

    • 14lessons
    • 70questions
    • 10ebooks

    How a computer is put together, installing the system, and connecting computers in a network.

    Who it suits

    • Learners who enjoy taking things apart and fixing them
    • Anyone planning to work in computer service or IT support
    • People who want to open a computer repair shop
    • Office staff who look after the computers and the network

    What you will practise

    • Identify every part inside a PC and what it does
    • Assemble a PC safely and set the boot order in BIOS/UEFI
    • Install Windows and drivers, and diagnose common hardware faults
    • Choose network devices, cables and connectors for a small office

    Study books in the student portal

    Free ebooks for this course

    7 more free ebooks for Hardware and networking
    See the full courseAsk about this course

  2. Learners who want hands-on technical work

    PC maintenance

    • 14lessons
    • 70questions
    • 6ebooks

    Keeping computers running: finding faults, cleaning, upgrades and installing software.

    Who it suits

    • Anyone who looks after computers at home, in a shop or in an office
    • Learners who want to start in computer service
    • Shop owners who sell or service computers
    • People who want to fix their own PC instead of waiting for a technician

    What you will practise

    • Know the motherboard, CPU, RAM types, HDD, SSD and NVMe storage
    • Assemble a PC safely and set up BIOS/UEFI and the boot order
    • Install Windows and drivers
    • Troubleshoot step by step and prevent faults with cleaning, airflow, a UPS and backups

    Study books in the student portal

    Free ebooks for this course

    3 more free ebooks for PC maintenance
    See the full courseAsk about this course

  3. Learners who want hands-on technical work

    Mobile repairing

    • 7lessons
    • 35questions
    • 4ebooks

    Finding and fixing common faults in mobile phones.

    Who it suits

    • Learners who want a hands-on trade
    • People planning to open a mobile repair shop
    • Mobile shop staff who want to handle repairs
    • Anyone curious about what is inside a smartphone

    What you will practise

    • Name the main parts inside a smartphone and what each does
    • Set up a safe workbench with the right repair tools
    • Handle, charge and store lithium-ion batteries safely
    • Diagnose charging faults step by step

    Study books in the student portal

    Free ebooks for this course

    1 more free ebook for Mobile repairing
    See the full courseAsk about this course

What you will learn

4 study books, 28 lessons.

Every lesson of the study books that come with these courses in the student portal. Open a lesson to see its key points. Your centre gives you the syllabus, the duration and the fee.

Computer Hardware and Maintenance

For Hardware and networking and PC maintenance

Know every part inside a PC, assemble one safely, set up BIOS/UEFI, install Windows and drivers, and diagnose and prevent common hardware faults.

  • 7 lessons
  • About 21 min of reading
  • 35 practice questions
  • 25 key terms
  1. 1Inside the PC: Motherboard and CPU5 key points · 3 min read
    • The motherboard connects every component and carries power and data.
    • Form factors such as ATX, Micro-ATX and Mini-ITX must suit the cabinet.
    • CPU specifications include cores, threads, clock speed (GHz) and cache.
    • A CPU must match the socket and appear on the motherboard support list.
    • Thermal paste and a cooler stop the CPU from overheating.
  2. 2Memory: RAM Types5 key points · 3 min read
    • RAM is fast, volatile working memory; its contents vanish without power.
    • DDR3, DDR4 and DDR5 are not interchangeable because the notch position differs.
    • Desktops use DIMMs, laptops use SO-DIMMs, and some laptops have soldered RAM.
    • Matching modules in the correct slots run in faster dual-channel mode.
    • A loose RAM module is a common cause of no display.
  3. 3Storage: HDD, SSD and NVMe5 key points · 3 min read
    • HDDs use spinning platters; SSDs use flash memory with no moving parts.
    • SATA SSDs are limited by the SATA interface; NVMe SSDs use faster PCIe lanes.
    • M.2 is a form factor, and an M.2 drive can be SATA or NVMe.
    • Defragment HDDs but never SSDs; Windows uses TRIM for SSDs.
    • A clicking hard disk means back up the data immediately.
  4. 4The SMPS and Computer Ports5 key points · 3 min read
    • The SMPS converts 230 V AC mains into low DC voltages: +12 V, +5 V and +3.3 V.
    • Main connectors are the 24-pin ATX, 8-pin CPU, PCIe and SATA power.
    • Choose adequate wattage from a reliable brand and protect it with a UPS.
    • Never open an SMPS: its capacitors can stay charged.
    • USB-C is a connector shape; speed depends on the USB version.
  5. 5Assembling a PC Safely5 key points · 3 min read
    • Unplug the PC and drain leftover charge before working inside.
    • ESD can damage parts invisibly: use a wrist strap, an antistatic mat and antistatic bags.
    • Handle components by their edges and never force a CPU or RAM module.
    • A pea-sized dot of thermal paste is enough; connect the fan to CPU_FAN.
    • If a new build will not start, check the front-panel and CPU power cables first.
  6. 6BIOS/UEFI, Boot Order, Windows and Drivers5 key points · 3 min read
    • Firmware runs POST, then starts the OS from the first bootable device.
    • UEFI replaces legacy BIOS and supports GPT drives and Secure Boot.
    • Setup and boot-menu keys vary by maker; Delete, F2, F12 and Esc are common.
    • Windows 11 requires Secure Boot capable UEFI firmware and TPM 2.0.
    • Get drivers from official sites; Device Manager shows problems and can roll back a driver.
  7. 7Troubleshooting and Preventive Maintenance5 key points · 3 min read
    • Troubleshoot methodically: ask, reproduce, check simple things, change one thing at a time.
    • Fans without a display often means RAM seating or the wrong monitor port.
    • A clock that resets at every start points to a weak CMOS battery.
    • Beep codes differ by manufacturer, so check the motherboard manual.
    • Regular cleaning, good airflow, a UPS and backups prevent many faults.

Computer Networking

For Hardware and networking

Learn how computers connect and talk to each other, from network types, topologies, devices, cables and Wi-Fi to IPv4 addressing, DNS, DHCP, the OSI and TCP/IP models, common ports and basic troubleshooting.

  • 7 lessons
  • About 28 min of reading
  • 35 practice questions
  • 25 key terms
  1. 1Networks, network types and topologies5 key points · 4 min read
    • A network connects devices so they can share data, printers and an internet connection.
    • In a client-server network, servers provide services to clients; in a peer-to-peer network all computers are equal.
    • By size, networks are PAN, LAN (building or campus), MAN (city) and WAN (countries); the internet is the largest WAN.
    • Star is the usual LAN topology: a broken cable affects one device, but a failed central device stops them all.
    • A full mesh of n devices needs n(n-1)/2 links.
  2. 2Network devices: NIC, hub, switch, router and access point5 key points · 4 min read
    • Every networked device has a NIC with a 48-bit MAC address, written as 12 hexadecimal digits.
    • A hub repeats data out of every port; a switch learns MAC addresses and sends data only to the right port.
    • A router connects different networks and forwards packets using IP addresses.
    • An access point lets wireless devices join a wired network.
    • A home Wi-Fi router combines a router, a switch, an access point, a DHCP server and a firewall.
  3. 3Cables, connectors and Wi-Fi5 key points · 4 min read
    • Twisted-pair LAN cable has four twisted pairs to reduce interference and uses RJ45 connectors.
    • A single twisted-pair Ethernet run should be no longer than 100 metres.
    • Optical fibre carries light, covers long distances at high speed and is immune to electrical interference.
    • 2.4 GHz Wi-Fi reaches further; 5 GHz is faster with a shorter range.
    • Secure Wi-Fi with WPA3 or WPA2; WEP is outdated and unsafe.
  4. 4IPv4 addresses, private ranges and subnet masks5 key points · 4 min read
    • An IPv4 address is 32 bits, written as four octets from 0 to 255; IPv6 uses 128 bits.
    • The subnet mask divides an address into a network part and a host part; /24 means 255.255.255.0.
    • A /24 network has 254 usable addresses; the first is the network address and the last is the broadcast address.
    • The private ranges are 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16, and NAT lets them share a public address.
    • Traffic for another network goes to the default gateway, which is the router.
  5. 5DNS and DHCP5 key points · 4 min read
    • DNS translates domain names such as www.example.com into IP addresses, and answers are cached.
    • A lookup goes from the resolver to a root server, then the top-level domain servers, then the domain's authoritative server.
    • DHCP gives a device its IP address, subnet mask, default gateway and DNS servers automatically.
    • DHCP works in four steps, Discover, Offer, Request and Acknowledge (DORA), and addresses are leased.
    • Printers and servers need a fixed address: a static address or a DHCP reservation.
  6. 6The OSI and TCP/IP models and common ports4 key points · 4 min read
    • The OSI model has seven layers: Physical, Data link, Network, Transport, Session, Presentation and Application.
    • The TCP/IP model has four layers: Network access, Internet, Transport and Application.
    • TCP is reliable and connection-oriented; UDP is faster and connectionless.
    • Well-known ports: 80 HTTP, 443 HTTPS, 22 SSH, 25 SMTP and 53 DNS.
  7. 7Troubleshooting with ping and ipconfig5 key points · 4 min read
    • ipconfig shows a Windows computer's IP address, subnet mask and default gateway; ipconfig /all adds the MAC address and the DHCP and DNS servers.
    • ping checks whether an address replies and shows the round-trip time in milliseconds.
    • An address starting with 169.254 means the computer could not get one from DHCP.
    • Troubleshoot outwards: loopback, then the default gateway, then an internet address, then a name.
    • If an IP address replies but a name cannot be found, the problem is DNS.

Cyber Security Basics

For PC maintenance

Protect your accounts, money and data: strong passwords, two-factor authentication, spotting phishing and UPI fraud, malware, safe browsing, backups and social media privacy.

  • 7 lessons
  • About 21 min of reading
  • 35 practice questions
  • 25 key terms
  1. 1Strong Passwords and Password Managers5 key points · 3 min read
    • Length matters most: use a passphrase of at least 12 characters.
    • Use a different password for every account.
    • A password manager keeps passwords in an encrypted vault behind one master password.
    • Never share a password, even with someone claiming to be from your bank.
    • Passkeys sign you in with your device screen lock and resist phishing.
  2. 2Two-Factor Authentication5 key points · 3 min read
    • 2FA adds a second proof of identity, so a stolen password alone is not enough.
    • The factors are something you know, something you have and something you are.
    • Authenticator apps are safer than SMS OTPs; security keys and passkeys are strongest.
    • Deny any sign-in approval request you did not start.
    • Keep backup codes offline in case you lose your phone.
  3. 3Phishing, Smishing and Vishing5 key points · 3 min read
    • Phishing impersonates a trusted source to steal secrets or install malware.
    • Smishing uses SMS or chat apps; vishing uses voice calls.
    • Urgency, prizes and requests for OTPs or PINs are red flags.
    • Verify by calling the official number on your card or the official website.
    • If you clicked, change passwords, enable 2FA and tell your bank quickly.
  4. 4UPI and OTP Fraud5 key points · 3 min read
    • You never need a UPI PIN or a QR scan to receive money.
    • Never share an OTP; read what the OTP message says it is for.
    • Do not install screen-sharing apps at a stranger's request.
    • Take helpline numbers only from official apps, websites or your card.
    • Report fraud at once to your bank and on 1930 or cybercrime.gov.in.
  5. 5Malware: Types and How It Spreads4 key points · 3 min read
    • Malware is any software designed to harm, spy on or control a device.
    • A virus needs a host file, a worm spreads by itself, a trojan disguises itself.
    • Ransomware encrypts files and demands payment; an offline backup is the best defence.
    • Pirated software, unknown apps, attachments and pen drives are common routes in.
  6. 6Updates, Antivirus and Safe Browsing5 key points · 3 min read
    • Updates patch vulnerabilities, so install them promptly.
    • Windows 10 and 11 include Microsoft Defender Antivirus; run only one real-time antivirus.
    • HTTPS encrypts the connection but does not prove a site is genuine.
    • Check the real domain name before entering a password.
    • Avoid banking on public Wi-Fi and sign out on shared computers.
  7. 7Backups and Privacy on Social Media5 key points · 3 min read
    • Follow 3-2-1: three copies, two kinds of storage, one copy off-site.
    • Keep an unplugged backup to survive ransomware, and test restoring files.
    • Syncing alone is not a backup.
    • Never post Aadhaar, PAN, tickets or your live location publicly.
    • Confirm unexpected money requests from friends by phone.

Mobile Repairing Basics

For Mobile repairing

Learn the parts inside a smartphone, the tools and safety rules of a repair bench, lithium-ion battery safety, how to diagnose charging, display and software faults, and how to protect customer data.

  • 7 lessons
  • About 21 min of reading
  • 35 practice questions
  • 25 key terms
  1. 1Inside a Smartphone: The Main Parts5 key points · 3 min read
    • A smartphone has the same building blocks as a computer, packed into a small space.
    • The display assembly bonds cover glass, a touch layer and an LCD or OLED panel together.
    • LCD panels need a backlight; OLED pixels produce their own light.
    • The motherboard carries the SoC, RAM, storage and power management chips.
    • Flex cables snap onto board-to-board connectors and must be lifted straight up, gently.
  2. 2Repair Tools and Workbench Safety5 key points · 3 min read
    • Keep screws organised, because a long screw in the wrong hole can damage the board.
    • Use plastic tools near the battery and never pry with metal.
    • Gentle, moving heat softens adhesive without damaging parts.
    • A multimeter measures voltage, current and resistance and tests continuity.
    • Disconnect the battery connector first, before any other connector.
  3. 3Lithium-Ion Battery Safety5 key points · 3 min read
    • Phones use lithium-ion batteries fitted with a protection circuit.
    • A swollen, dented or very hot battery is dangerous: stop using it and replace it.
    • Puncturing, crushing or short-circuiting a cell can cause thermal runaway and fire.
    • Use only plastic tools near the battery and fit replacements made for that model.
    • Dispose of old batteries through authorised e-waste collection, never in household waste.
  4. 4Diagnosing Charging Faults5 key points · 3 min read
    • Always test with a known-good charger and cable first.
    • Lint in the port often causes charging only at an angle; clean it with non-metal tools.
    • Battery protection settings and overheating can pause charging without any fault.
    • A USB power meter shows whether the phone is actually drawing current.
    • If wireless charging works but cable charging does not, suspect the port or sub-board.
  5. 5Diagnosing Display and Touch Faults5 key points · 3 min read
    • First check whether the phone works: call it, connect it to a computer, try the torch test.
    • On most modern phones, cracked glass means replacing the whole display assembly.
    • Reseat the display connector and try a known-good test display before ordering a part.
    • Test touch, sensors and the front camera before sealing the phone.
    • Explain the quality of replacement displays honestly to the customer.
  6. 6Software Problems: Backups, Factory Reset and Flashing5 key points · 3 min read
    • Try gentle fixes first: restart, free storage, update, clear cache, safe mode.
    • Back up contacts, photos, chats and files before any reset or flash.
    • A factory reset erases user data and returns the phone to its factory software.
    • Never bypass Factory Reset Protection or Activation Lock; only the owner can sign in.
    • Flash only the official firmware for the exact model.
  7. 7Customer Data Privacy and Professional Practice5 key points · 3 min read
    • Record the model, IMEI, condition, accessories and data consent on a job card.
    • Ask customers to back up and to remove the SIM and memory card first.
    • Never look at, copy or share customer data, and delete test photos.
    • Never ask for a UPI PIN, banking password or OTP.
    • Before a phone is sold, remove the accounts, reset it and match the IMEI to the bill.

In the student portal

Practise until you are sure, then take the exam.

Students of the institute and its member centres sign in to read these study books lesson by lesson and test themselves on each one. Your centre gives you your login when you enrol.

  • 4study books
  • 140practice questions
  • 100glossary terms
Student login

  • Fresh questions each time

    Each test is a random set of up to 20 questions from the study book’s question bank.

  • One minute per question

    A timer counts down while you answer, as in an exam hall.

  • Every answer explained

    At the end you see the right answer and an explanation for each question.

  • Read or print a lesson

    Each study book has its lessons, key points, exercises and a glossary, on a phone or a computer.

Free ebooks

11 free ebooks for hardware courses.

Branded PDF ebooks anyone can read or download: open a title for its contents page, or download the PDF straight away.

Open these in the ebook library

Good to know

Who these courses are for.

  • Useful for

    • Computer service and repair work
    • Setting up and looking after an office network
    • Starting a repair shop of your own

  • Who can join

    • Students above 12 years of age can take admission
    • At the Delhi head office or an authorised member centre
    • Learners who want hands-on technical work

  • Study notes

    • Gurukul E-Notes, online notes for students, cover hardware and networking
    • Your centre gives you the course material

Admission

From your first question to your certificate.

The usual steps, at the head office or at a member centre.

Start with a question

  1. Ask about the course

    Call or WhatsApp the head office, or visit your nearest member centre. Ask for the duration, the fee and the batch timings in writing.

  2. Fill the admission form

    Admission forms are supplied by the head office to every centre.

  3. Learn in class

    Attend your batch at the centre, with the course material, the study books in the student portal and study notes.

  4. Take the exam

    The institute prefers written exams, taken in front of a teacher.

  5. Receive your certificate

    Students who pass get a Gurukul Technicals Institute certificate and marksheet. Employers can ask the head office to verify it.

Questions about hardware courses

Still have a question?

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Who can take admission?

Students above 12 years of age can take admission. Tell the head office or your centre what you already know, and they will suggest where to start.

How long is the course and what is the fee?

Duration, fees and batch timings depend on the course and the centre. Ask the head office or your nearest member centre, and get the details in writing before you pay.

Where are the classes?

At the head office in Delhi (A-10, Chief Commissioner Colony, opposite Rana Pratap Bagh) and at authorised member centres. Call or WhatsApp the head office to find the nearest centre.

Is there an exam and a certificate?

Yes. The institute prefers written exams, taken in front of a teacher. Students who pass receive a Gurukul Technicals Institute certificate and marksheet, which the head office verifies on request.

What study material comes with the course?

Students of the institute and its member centres sign in to the student portal to read 4 study books for these courses (Computer Hardware and Maintenance, Computer Networking, Cyber Security Basics, Mobile Repairing Basics) and take timed practice tests. The free ebooks on this page can be downloaded by anyone.

Are study notes provided?

Students of the institute and its member centres get Gurukul E-Notes, online study notes. For these courses they cover hardware and networking.

Other course families

More courses at the institute.

All courses

GTI Franchise Network

Teach hardware courses at your own centre.

Member centres run the institute’s courses under their own name, with exams, certificates and support from the head office.

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