Hardware & repair
Computer Hardware and Maintenance Study Book
The complete study notes, practice questions and glossary for Computer Hardware and Maintenance
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Hardware, repair and security
Assemble, repair and maintain computers, laptops and printers, and set up and look after office networks and Wi-Fi.
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The work
A hardware technician keeps computers working: assembling new PCs, finding and replacing faulty parts, installing Windows and drivers, removing viruses, and servicing laptops and printers. A networking technician connects computers together: laying and crimping LAN cables, setting up routers, switches and Wi-Fi, sharing printers and keeping the office online.
Every office, school, shop and home with a computer needs this help sooner or later, so the work is varied and practical. With experience, many technicians move into network administration or open a service centre of their own.
A day at work
Every workplace is different, but a typical day goes something like this.
Go through the complaints: a PC that will not start, a slow laptop, a printer jam, an office with no internet.
Diagnose at the bench: test the power supply, RAM and storage, check for loose cables and run diagnostics.
Visit an office to crimp and test new LAN cables, configure the router and Wi-Fi, and share a printer.
Back up and reinstall Windows on a customer’s PC, update the job sheet, and call customers whose machines are ready.
Skills and tools
The skills come first; the tools are how you use them. You do not need everything on day one.
Learning path
A realistic plan if you practise most days, at a course or at home. Go at your own pace: the order matters more than the speed.
Practice plan
Employers and customers want to see what you can do. Build these as you learn, and keep them neat: they speak for you in an interview.
For every fault you fix, write down the symptom, what you checked, the cause and the fix. Interviewers love this.
Photos and a parts list of a computer you put together, with notes on why you chose each part.
A home or lab network with a router, cables and a shared printer, with a simple diagram.
Old computers you repaired for a school or relatives, with before-and-after notes.
Getting started
Most people start with a junior job or helper role and learn on the job; some build their own small business step by step.
Stay safe
Fake job offers target people looking for their first job. A real employer never asks you for money.
A real employer does not ask for a registration fee, a security deposit, or money for a training kit, ID card or uniform before you join. If someone asks you to pay to get a job, it is a scam.
Offers on WhatsApp or Telegram to earn by liking videos, writing reviews or doing "simple online tasks" are a common fraud. They pay a little at first, then ask you to deposit money for bigger tasks.
Look for an office you can visit, an official email address and website, and people who have actually worked there. Search the company name with the word "fraud" before you go.
Never share an OTP, bank PIN or password. Do not send scans of Aadhaar or PAN, or install a screen-sharing app, for anyone you have not checked.
Interviews should be in an office or a public place, in the daytime. Tell a family member where you are going, and leave if anything feels wrong.
Call the national cyber crime helpline 1930 straight away, report it at cybercrime.gov.in and tell your bank. The sooner you report, the better the chance of stopping the money.
National cyber crime helplineCheated by a fake job or payment? Call 1930 straight away and report it at cybercrime.gov.in (opens in a new tab).
Interview tips
Learn at the institute
These courses teach skills on this page. For the duration, fees and batch timings, ask the head office or your nearest member centre.
Free ebooks
Free PDF ebooks for this line of work, to read on your phone or print.
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Still have a question?
Chat on WhatsAppNo. A good screwdriver set, an anti-static strap, a multimeter, a crimping tool and a bootable USB drive are enough to begin. Add tools as the work grows.
Computers, laptops, printers and networks are used in more places than ever, and they still need setting up, upgrading and repairing. Networking and Wi-Fi skills in particular are needed by every office and school.
Hardware is the computer itself: parts, repairs and Windows. Networking is connecting computers: cables, routers, Wi-Fi and the internet. Most technicians learn both, because customers expect help with both.
Yes, there are well-known industry certifications in hardware support and networking that some employers ask for. Build practical skills first, then look at which certificates the job notices in your area mention.
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