Lesson 14 — Intermediate

PC Troubleshooting & Maintenance

Computer slow hai, internet nahi chal raha, blue screen aa gayi — kya karein? Is lesson mein hum seekhenge systematic troubleshooting ka method aur roz ki maintenance tips jo computer ko healthy rakhein.

⏱ 13 min• Intermediate• Cloud Basics

Troubleshooting ka method

WHAT

Troubleshooting = problem ko systematically identify aur fix karna. Ek random fix nahi, balki step-by-step diagnosis — pehle cause dhundho, phir solution lagao.

WHEN

Jab bhi computer slow ho, error aaye, kuch kaam na kare — troubleshooting method use karo, jaldi solve hoga.

WHERE

Har IT support ka core skill hai. Ye practical skill interview mein bhi poochhi jaati hai ("PC slow hai, kya karoge?").

Troubleshooting steps:
1. Problem IDENTIFY karo (kya exactly ho raha hai)
2. OBSERVE karo (kab se, kya badla, error message)
3. Possible causes SOCHO (hardware/software/user)
4. TEST karo (ek-ek karke check)
5. FIX karo (solution apply)
6. VERIFY karo (problem solve hui?)
7. DOCUMENT karo (taaki aage kaam aaye)

Pro Tip: Hamesha simple se complex ki taraf jao. Aksar problem chhoti hoti hai — cable loose, setting off, ya restart se solve. Pehle wahi check karo.

Common problems aur fixes

PC slow hai :
  → Startup programs disable, RAM check, disk cleanup
  → SSD upgrade = sabse bada fark

Internet nahi chal raha :
  → Router restart, DNS flush (ipconfig /flushdns)
  → Wi-Fi forget + reconnect, ISP check

Blue Screen (BSOD) :
  → Error code note karo, safe mode mein boot
  → Driver update, RAM check (memory diagnostic)

Overheating :
  → Fans clean karo, thermal paste check
  → Hard surface pe rakho, vents block mat karo

Software crash :
  → Update/reinstall, corrupted file check

Ek universal fix jo 50% problems solve karta hai: Restart. Kaam na kare toh safe mode, phir diagnostics. Ye order follow karo.

Regular maintenance tips

Updates: OS aur software updated rakho (security patches).
Antivirus scan: weekly full scan karo.
Disk cleanup: temp files, old downloads hatao.
Defragment: HDD ke liye (SSD ke liye nahi!).
Backups: important data ka regular backup.
Physical clean: saal mein 1-2 baar dust fans se saaf karo.

Important: SSD ko defragment MAT karo — usme moving part nahi hai, defrag sirf HDD ke liye hai aur SSD ki life kam kar sakta hai. Ye trap exam mein bhi aata hai.

Performance improve karne ke tarike

Hardware upgrades :
  HDD → SSD     : boot 40s → 6s (best upgrade)
  RAM 4→8/16GB  : multitasking smooth
  CPU cooler     : thermal throttling se bachao

Software tweaks :
  Startup programs disable (Task Manager)
  Visual effects reduce
  Background apps close
  Browser tabs manage (memory zyada khaate hain)

Measure : Task Manager (CPU/RAM/Disk %), benchmark tools

Agar computer 5+ saal purana hai, toh SSD + RAM upgrade sabse cost-effective hai. Naya CPU lene se pehle ye do try karo.

Exercise

Question: Troubleshooting mein pehla step kya hai? (problem identify / fix / restart)

Question: SSD ko defragment karna chahiye ya nahi? (haan/naa)

Question: PC slow ho toh sabse effective saasta upgrade kaunsa hai — RAM ya SSD?

Common mistakes

Random fix karna bina diagnose kiye: Pehle problem identify karo, phir fix. Bina soche badalne se problem ho sakti hai worse.
SSD defrag kar dena: SSD defrag nahi hota — usme moving part nahi. Sirf HDD defrag hoti hai (ya TRIM for SSD).
Backups ko optional samajhna: Data loss ek din hota hai. Regular backup = insurance. 3-2-1 rule follow karo.

Desi example: Dost ka slow laptop

Dost ka 5 saal purana laptop slow tha. SSD lagaya + startup apps disable — ab iPhone jaisa fast boot:

Pehle : HDD + 10 startup apps = 90s boot
Baad : SSD + clean startup = 8s boot
Cost : sirf ₹3000, naya laptop nahi chahiye

Exam mapping (Practical / Interview)

Interview: "PC slow hai toh kya karoge?" — systematic answer chahiye.
Practical exam: disk cleanup, defrag, task manager.
Trap: "Defrag SSD is good" — galat, SSD ke liye TRIM hai, defrag nahi.

Lesson complete?

Troubleshooting skill aa gayi. Ab last lesson — Top 50 Questions — jo interview aur exam ke liye hain.