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 Post subject: PC wont boot
PostPosted: Mon Jun 04, 2012 4:19 pm 

Joined: Thu Jan 19, 2012 7:24 pm
Posts: 56
Hey guys. PC is fucked as of yesterday - turn the power on and it turns on for 1 second then powers off again, then powers on again for about 10 seconds then off again and just loops like that. It wont boot long enough to get into the bios...the gigabyte screen comes up that says press del to go to bios but then it just turns off. It's not the power supply as I tested another one. Any ideas as to how I could determine what's wrong? I've got no experience with this so any help is appreciated.
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 Post subject: Re: PC wont boot
PostPosted: Mon Jun 04, 2012 5:38 pm 

Joined: Thu Jan 19, 2012 4:13 pm
Posts: 1940
because its Gigabyte that is your problem,

Have you tryed clearing the bios ?
check you cpu fan is running and if its still tight on the motherboard, had this problem a couple weeks ago. pc kept turning off. the cpu heatsink came loose and was only just toughing the cpu. plastic intel crap clips


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 Post subject: Re: PC wont boot
PostPosted: Mon Jun 04, 2012 5:47 pm 
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Joined: Sat Feb 18, 2012 10:03 am
Posts: 1264
Location: Adelaide
sounds like a stuffed mobo to me what gen cpu you running maybe some one could lend you one to test
check power connections for mobo to make sure its not 1 pin causing problem
Psu needs a mobo signal to turn on if thats lost it will turn off thus suspecting mobo
youl have to look this up but at boot hold down esc i think and youll get the post screen instead of gb screen and you might be able to see the item that fails in post data

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 Post subject: Re: PC wont boot
PostPosted: Mon Jun 04, 2012 6:05 pm 
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Joined: Thu Jan 19, 2012 6:21 pm
Posts: 970
that sounds also like it could be an individual component shorting out a bit .. which causes exactly what your describing. .

i would start from basics before you replace anything - meaning:

disconnect CD/DVD drive (power and data)
disconnect floppy (if exists) (power and data)
disconnect hdd (power and data)

check existing connections to mobo to make sure none are lose,
then turn machine on with mobo / cpu / ram only..

if multiple ram sticks, then try one at a time if problem still happening at this point.

if successful with ram, it will be a post then black screen at best..
then connect remaining items one at a time to find fault - starting with hdd..

make sense?

if problem occurs when just mobo / cpu / ram... then most likely your mobo is the problem...

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 Post subject: Re: PC wont boot
PostPosted: Mon Jun 04, 2012 6:10 pm 
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Joined: Thu Jan 19, 2012 7:25 pm
Posts: 1059
Location: Gladstone
connect a speaker to the mb and the beeps will tell all!!!!!!!!!!!!!

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 Post subject: Re: PC wont boot
PostPosted: Tue Jun 05, 2012 9:53 am 

Joined: Thu Jan 19, 2012 7:24 pm
Posts: 56
Thanks for the ideas guys. Will give them a go in the next few days and let you know how I go. Should be able to RMA the mobo if thats stuffed as it's only ~8 months old.


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 Post subject: Re: PC wont boot
PostPosted: Wed Jun 06, 2012 7:47 am 
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Joined: Thu Jan 19, 2012 2:45 pm
Posts: 2935
Location: Compton
Hi Lids,

If you know psu is good then thats a good start.

Now what you need to do is strip the pc back to absolute basics.

Dealer pretty much summed it up so i won't reiterate. Just need to do process of elimination.

It does sound like motherboard has died. Being under warranty is good. Make sure if it is the motherboard that you get the exact same brand and model. This way it will be direct replacement. If you get a different model or brand then you will have to format as you will load into windows and get a million errors.

Pain in the ass i know but it happens :/ I have to take my psu back this week for the 2nd replacement now.

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 Post subject: Re: PC wont boot
PostPosted: Sun Jun 10, 2012 1:41 pm 

Joined: Thu Jan 19, 2012 7:24 pm
Posts: 56
Did as above - unplugged everything except mobo, ram, cpu. Also used onboard graphics and alternated ram sticks and the issue is still present.

Dragon you suggested clearing the bios, do you have to get into the bios to do that as I cant boot that far.

Should I just send the mobo back to where I got it from if it's most likely that which is broken, or take it off to a pc repair place and get them to diagnose it with some spare parts to be sure?


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 Post subject: Re: PC wont boot
PostPosted: Sun Jun 10, 2012 2:27 pm 

Joined: Thu Jan 19, 2012 4:13 pm
Posts: 1940
Lids wrote:
Dragon you suggested clearing the bios, do you have to get into the bios to do that as I cant boot that far.



Unplug every thing from the back of the PC, power cord, etc, etc...

then remove the battery on the motherboard you will need to leave it out for 30mins or so and it should clear the bios.

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Or you can do it the ])RAG()N way that is much quicker.

once the battery is out get a coin and make the coin touch both battery terminals for about 5-10sec then put the battery back in then reconnect your power cord ,etc , etc and then start your computer it should boot up with the default bios setting.

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if it doesn't boot after this you'll need to return the motherboard and get a replacement.


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 Post subject: Re: PC wont boot
PostPosted: Mon Jun 18, 2012 8:22 pm 
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Joined: Sun Jan 29, 2012 5:45 pm
Posts: 106
you can always with the power cable removed and the cmos battery

then press and hold the power button, this will drain the capacitors of juice....and voila - no 30 min wait.....

just what i do ;-)


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