On

We will duscuss simple Hardware Problems and Solutions today. To use your computer well for a long time, you don't need to be a hardware expert. However, knowing some common things can save a lot of time and money. Sudden failure to power on, hanging, or repeated restarts - these problems often happen due to minor reasons. Let's learn step by step what to check first if there's a problem with the computer.



Common Problems and Solutions (Software and External)


1. Computer takes a long time to start

Possible causes:

  • Too many startup programs
  • Slow hard disk
  • Virus
  • Low RAM

Solution steps:

  1. Disable unnecessary startup programs
  2. Scan with antivirus
  3. Use SSD if possible

2. Computer has become very slow

Possible causes:

  • Hard disk almost full
  • Low RAM
  • Many background programs running

Solution steps:

  1. Delete unnecessary files
  2. Do disk cleanup
  3. Upgrade RAM if needed

3. Keyboard not working

Possible causes:

  • USB port issue
  • Keyboard damaged
  • Driver problem

Possible solutions:

  • Plug into another USB port
  • Test with another keyboard

4. Mouse not working

Possible causes:

  • USB port issue
  • Mouse cable damaged
  • Sensor problem

Possible solutions:

  • Plug into another port
  • Test with another mouse

5. Internet connection not working

Possible causes:

  • LAN cable issue
  • Router problem
  • Wrong network settings

Solution steps:

  1. Unplug and replug LAN cable
  2. Restart router

6. USB device not working

Possible causes:

  • USB port damaged
  • Driver problem
  • Device damaged

Possible solutions:

  • Plug into another port
  • Test on another computer

7. Strange noise from computer

Possible causes:

  • Hard disk failing
  • Fan bearing damaged
  • Loose case screws

Solution steps:

  1. Check fan
  2. Back up hard disk


Complex Problems and Solutions (Hardware)


1. Is the problem in the power cable?

First, check this very common thing.

  1. Unplug the computer's power cable.
  2. Plug the same cable into the monitor.
  3. Check if the monitor's power light turns on.
  • If light doesn't turn on: Power cable is likely damaged. Use a new one.
  • If light turns on: Problem is elsewhere; check next steps.

2. Computer powers on but no display

This is a very common problem.


Possible causes:

  • RAM not attached properly
  • Graphics card loose
  • Monitor cable loose
  • Motherboard issue

Solution steps:

  1. Remove and reattach RAM
  2. If present, remove and reseat graphics card
  3. Check monitor VGA/HDMI cable

3. Is the problem in the RAM?

No display even after powering on or sudden restarts can be due to RAM issues.


How to clean RAM:

  1. Turn off computer
  2. Press locks on both sides of RAM to release
  3. Carefully remove RAM
  4. Gently clean golden part with pencil eraser
  5. Reinsert properly

Extra test: Remove all RAM and power on.


  • If it beeps ➤ RAM problem
  • If no sound ➤ Possible motherboard issue

4. Is the problem in the cooling fan?

A common reason for repeated hanging or slowing is dust buildup in the cooling fan.


If dust accumulates:


  • Processor overheats
  • Motherboard may get damaged
  • Computer may hang

What to do:

  1. Open case periodically and clean
  2. Clean dust from cooling fan
  3. Check if power supply fan spins properly

5. Is the processor overheating?

Thermal paste (silicon/thermal paste) is usually applied on the processor. After a long time, it dries up. As a result, the processor doesn't cool properly, and the computer may hang.


Solution steps:

  1. Clean old paste
  2. Apply new thermal paste
  3. Reattach cooling fan

6. Computer keeps hanging repeatedly

Possible causes:

  • Processor overheating
  • RAM problem
  • Virus

Solution steps:

  1. Clean cooling fan
  2. Replace thermal paste
  3. Scan for viruses

7. Is the problem in the hard disk or SSD?

Hard disk or SSD issues usually show these symptoms:


  • Sudden Blue Screen
  • "Physical Memory Dump" message
  • "Disk Error" message

How to check:

  1. Power on and enter BIOS
  2. Go to Advanced ➤ Drive Configuration
  3. Check if hard disk or SSD is detected

If not detected:

  1. Unplug and replug hard disk data cable
  2. Check power connection

8. Computer suddenly shuts down

Possible causes:

  • Power supply issue
  • Processor overheating
  • Power outage

Solution steps:

  1. Test power supply
  2. Check if fan spins properly
  3. Use UPS

9. Is the problem in the power supply?

If the computer repeatedly restarts, suddenly shuts down, or doesn't power on even after pressing power button - power supply may be faulty.


Simple way to test power supply:

  1. Open case
  2. Disconnect large connector from motherboard
  3. Take a small wire
  4. Short the green (Green) and black (Black) pins on power supply
  • If good, fan will spin.
  • If fan doesn't spin: Power supply may be damaged; replace with new one.

10. Is the problem in the motherboard?

Motherboard BIOS settings can sometimes cause issues.


CMOS Reset method:

  1. You'll see a small battery on the motherboard
  2. There's a jumper next to it
  3. Remove jumper and place on other pin for a few seconds
  4. Put back in original position (this resets BIOS)

Capacitor issue: If motherboard is old, capacitors may bulge. This prevents proper voltage supply, causing hangs.



Final Words

By properly checking the above steps, you can solve many common problems yourself. However, if the computer still doesn't work after all checks, it means some hardware part is damaged. In that case, it's best to seek help from an experienced technician.