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Sometimes power button dont work


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#1
Auser

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My pc was working alright for last 2 years but yesterday and today, it did not start by pressing power button, i unplugged power wires from motherboard and plugged in again three times then it worked. Also when cpu is standing it dont work, when it is lying horizantly it works, this is happening again and again. Sometimes fans will start but it will not boot up, whats the problem, i have not installed any new hardware
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#2
Auser

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now i noticed it gets on even when it is standing but problem is somewhere else
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#3
ciiindy

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My pc was working alright for last 2 years but yesterday and today, it did not start by pressing power button, i unplugged power wires from motherboard and plugged in again three times then it worked. Also when cpu is standing it dont work, when it is lying horizantly it works, this is happening again and again. Sometimes fans will start but it will not boot up, whats the problem, i have not installed any new hardware


Im not a pro, but I did have the same sort of problem years back..
If you can borrow one, try switching out your power supply, yours may be weak. Or if you can get your hands on a power supply tester, that will tell you if full power is getting to the components.
Just for the heck of it, make sure there is nothing metal bouncing around underneath the mother board.
My problem was i needed a new power button - $3.95
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#4
Auser

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when i was able to get pc on yesterday it was fine till yesterday, today it happened again.

when fan gets on it still dont boot immediately, it takes much times then boots
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#5
phillpower2

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Please provide more information about your computer, is it a custom build
or branded name such as Dell or HP etc, if it is please provide the model
name or number, this will enable others to help you better, providing your
MB information would also save a lot of time.

Sometimes fans will start but it will not boot up, whats the problem, i have not installed any new hardware

Do not try booting up again until the psu has been swapped out or tested correctly!
ciiindy was right to suggest swapping the psu out, it is is one of the first
things to do because if it fails completely it could take out the MB, CPU,
Ram and any add on cards for example.
Take notes of where all connections go from the psu before disconnecting,
if you have a digital camera take some photographs also.
Remember to disconnect the power cord from the wall and take anti static
precautions by touching a bare metal part of the case before touching anything
inside the case.
If you require further assistance I will be happy to help.
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#6
phillpower2

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In addition to the above check the connections from the front case switch to the MB header, look for anything that is a loose MB connection & take the opportunity to clean out any heat trapping dust.

Edited by phillpower2, 09 August 2010 - 03:35 AM.

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#7
Auser

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i think problem is with power supply,
my cpu is custom built.
i willa lso clean dust today
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#8
Auser

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today it happened again, i gave a blow to cpu then it started, i think something is blocking current to reach motherboard one red light is on and other is not/
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#9
phillpower2

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Have you had the psu either checked out or replaced yet?
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#10
Auser

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no i am just using it as it is
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