Troubleshooting Hardware Issues 5.2

Question 1

power issues

Answer 1

the power button is not connected properly to the motherboard

wall outlet is faulty

power cable to the computer is faulty

power supply is faulty

Question 2

if wall outlet is faulty, what to do?

Answer 2

use a multimeter or voltmeter to test the power outlet:

US or Canada 110-120V /60Hz

Europe or Asia 220-240 V/ 50Hz

Question 3

if a power supply is faulty

Answer 3

use a power supply tester

Question 3

if power cables from power supply to components are faulty

Answer 3

test the detachable cables, check each pin on each side of the cable to verify full continuity

Question 3

Power on self test (POST) issues

Answer 3

do diagnostic program inside the system firmware

Question 3

1 short beep means

Answer 3

system is ok

Question 4

2 short beeps

Answer 4

error code

Question 5

no beep

Answer 5

power supply issue, motherboard problem, or faulty onboard speaker

Question 6

continuous beep

Answer 6

problem with system memory modules or memory controller

Question 7

repeating short beeps

Answer 7

power supply fault or motherboard problem

Question 7

1 long and 1 short beep

Answer 7

motherboard problem

Question 7

1 long beep, 2 or 3 beeps

Answer 7

video adapter error

Question 8

3 long beeps

Answer 8

keyboard issue

Question 9

displays an error whenever the operating system has issue

Answer 9

crash screen

Question 9

problem with hardware that windows cannot solve

Answer 9

blue screen of death (BSOD)

Question 10

problem with hardware that Apple cannot solve

Answer 10

pinwheel of death

Question 11

the system display gives an exit code

Answer 11

Kernel panic

Question 12

when the components are generating heat and it’s not cooling down, what you should do?

Answer 12

shut down the system and boot into the UEFI or BIOS

Question 13

excessive exposure to thermal loads can cause permanent damage

plugging or unplugging cables causes wearing out, and pins are getting bent or damaged

Answer 13

physical component damage

Question 14

modern systems are able to protect against overheating

overheating systems could reboot or shut down

increasing the page size in windows or the swap space in Linux

Answer 14

performance issues

Question 15

inaccurate system date and time

Answer 15

motherboard have a battery to keep the real-time clock (RTC) in sync

most modern operating systems set the date and time automatically

Question 16

non volatile type of memory that stores the BIOS settings and is built into the motherboard

Answer 16

Complementary metal oxide semiconductor (CMOS)

Question 17

Stores data without being constantly refreshed

Answer 17

Non volatile RAM (NVRAM)