Justice

| Is the onboard VGA card working | Yes/no? |

| Is the LED light of the monitor on | Yes/no? |

| Have you installed expansion card on VGA incase the onboard is bad | Yes/no? |

| Have you used your multimeter to measure the power supply components just to ensure that the power supply to the components is within the normal range | Yes/no? |

| Have you tried changing the power supply pack with another to test for functionality | Yes/no? |

| Did you dismantled the system and try assembling the system back again | Yes/no? |

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When I power the system on, I see the power LED light and hear the fan spins, but nothing else happens

| Have you tried reseating the RAM | Yes/no? |

| Is the CPU working | Yes/no? |

| Did you use another CPU for it | Yes/no? |

| Did you confirmed that the CPU is working | |

| Have you restart your system to ensure that it is not the problem of resuming from standby mode or hibernation | Yes/no? |

| Have you verified the number of beeps for further researches | Yes/no? |

| Did you tried dismantling your base unit completely and may try reassembling each of the components one after the other | Yes/no? |

| Is the hard drive working optimally | Yes/no? |

| Have you checked your processor if it is functioning as it should | Yes/no? |

| | Yes/no? |

The system beeps when I turn it on but there is nothing on screen

The power button won’t turn off the system

| Is the power button still working | Yes/no? |

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The keyboard doesn’t work

| If the keyboard is of Ps/2 connector, did turn off the system before the keyboard | Yes/no? |

| Have checked if the keyboard is properly plugged | Yes/no? |

| Did you checked if the keyboard’s driver is installed | Yes/no? |

| Have you swapped the keyboard with another to see if it works | Yes/no? |

| Have you verified that the USB port at the back of the case is working | Yes/no? |

| Have tried...