PC WON'T BOOT - HOW TO DIAGNOSE
PC Won't Boot - How To Diagnose
Hi, here is the simple steps you can use to diagnose your PC
- If the CPU (Central Process Unit) is heated or too much dirt: =>
Your PC will turn off immediately or you will hear the CPU Fan spinning
very loud and very fast but this problem can be fixed by just clean up
the CPU Fan, change thermal paste if you can.
- If the CPU (Central Process Unit) is dead =>
your PC won't be able to boot and you won't see the POST Screen.
Example: When you press the power button the power light is on and the
CPU Fan is spinning for a few seconds then off. And your monitor didn't
detect any signal from your PC.
- If your PC Power Supply is dead or the wire is broken
=> Your PC will completely dark and it's like dead but not dead just
because no electric power supply. Example: You press the power button
and nothing happen, no power light, CPU Fan isn't spinning.
- If your PC Power Supply is fired and almost dead =>
Your PC still be able to boot normally, but after a few new minutes you
will hear some noise and burning smell from the Power Supply. So the
best way just turn off your PC and change your Power Supply.
- If your PC Power Supply Wattage isn't enough => Your
PC won't be able to boot but this only happened when you upgraded your
hardware such as Video Card, Hard Drive, CPU ... and this problem can be
fixed by just change the power supply with higher wattage or just
unplug the Video Card if you don't want to buy a new power supply.
- If your PC RAM is bad =>
You'll see Blue Screen, PC turn off suddenly and sometimes, PC won't
boot, you'll hear sound (beat) but you still see the POST Screen on your
monitor and this problem can be fixed by just replace the RAM.
- If your PC RAM is dead =>
Your PC will boot and passed the POST Screen then off or stuck, for
some PCs you'll hear sound (beat). And this problem can be fixed by just
replace with new RAM.
- If your PC Hard Drive is bad => Your
PC will boot and passed only the POST Screen then off or stuck (replace
it might fix) or if your PC shutdown immediately while you are
installing a program or loading something to your Hard Drive and your PC
won't boot but you still see the POST Screen but some hard drives you
can't format it when reinstall Windows. Write Zero to your Hard drive
might fix the problem but you will lose all of your DATA.
- If your PC Hard Drive is dead => Your
PC will boot and passed the POST Screen then off, for some PCs you'll
hear sound (beat) if you've replaced but the problem still persist. And
this problem can be fixed by just replace with new Hard Drive.
- If your PC Motherboard is bad => Some parts of your peripheral don't work, example: Your sound card doesn't work correctly. Or you may see the blue screen.
- If your PC Motherboard is dead => Your
PC will boot and passed the POST Screen then off or stuck, for some PCs
you'll hear sound (beat) and after you've replaced RAM, Hard drive but
the problem still persist this means your motherboard is dead. Replace
with new mainboard to fix it.
- If your PC Video Card is bad (Laptop Only) =>
Your PC will boot normally, you can hear windows log on sound, all
lights are on and CPU Fan is spinning but your screen is black. This
problem can be fixed by REFLOWING your video card
