Troubleshoot computer hardware

Question 1

Cable Problems
Example: Loose power or data cables
Symptoms:

Computer won’t turn on

No display on the monitor

Devices like keyboard/mouse not working

Answer 1

Check all cables are firmly connected (power, HDMI, USB, etc.)

Unplug and replug cables to ensure proper contact

Replace damaged or frayed cables

Question 2

Monitor Problems
Example: Improperly adjusted monitor settings
Symptoms:

Blank or black screen

Dim or blurry display

No signal error

Answer 2

Check if the monitor is turned on

Adjust brightness, contrast, and resolution settings

Ensure correct input source (HDMI, VGA, etc.) is selected

Test monitor with another computer or cable

Question 3

Printer Problems
Example: Low ink or paper jam
Symptoms:

Printer not printing

Faded or missing text

Error lights blinking

Answer 3

Check and replace empty ink or toner cartridges

Remove any jammed paper carefully

Make sure the printer is connected (via cable or Wi-Fi)

Restart the printer and check for error messages

Question 4

Battery Problems
Example: Loose or dead battery (mostly for laptops)
Symptoms:

Laptop won’t power on without charger

Sudden shutdowns

Battery not charging

Answer 4

Make sure battery is properly seated

Try a different power adapter

Check battery health in system settings

Replace battery if it’s dead or swollen