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Computer starts for 1sec turn off!


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#1 Jenkuhnjk

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Posted 21 March 2014 - 04:10 PM

Computer starts up, fans and light come one for a sec then shuts off.

My computer broke a while back, got a new motherboard and installed everything. Computer started up worked for a day. Next day I start up and plug into a USB and computer turns off immediately. Tried again with same result. Go to turn on again and notice a burn smell from an area directly next to my heatsink, with a little smoke. I immediately turn off computer and blow on it? Since then computer has had the problem stated above. I switched power supply to make sure it wasn't that. I'm not very text savy, just kinda learn as I go. Any suggestions? Been without a computer for a while now getting frustrated. Motherboard was given to me by a friend from when before he updated his. Extremely dusty, I had dusted it with canned air before installing.

My computer:
650w power supply
655ti graphics (I think it's AMD not sure)
8gigs of ram
Intel core processor that came with my friend motherboard
Not sure bout motherboard it is made by dell and is a dual core.

Any advice or ideas for how to fix it would be appreciated... Thanks!

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#2 OldPhil

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Posted 21 March 2014 - 04:17 PM

IMO what ever smoked is done for, you need to take things apart to see if you can figure out what burned.  Near the heat sink could be CPU or a capacitor only inspection will tell.


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#3 Chris Cosgrove

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Posted 21 March 2014 - 07:28 PM

Smoke and burning smells are never a good sign. Even if you follow OldPhil's suggestion and identify what has gone up in smoke you may be able to do nothing about it due to the surface mount technology used in circuit boards today.

 

As you said this was an old mobo I think you are going to have to bite the bullet and either buy a new one or see if you can source another second hand one that has the same processor socket. Ebay ?

 

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#4 OldPhil

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Posted 21 March 2014 - 08:34 PM

To save yourself some grief get the exact board, if you go for a different board more likely it will not recognize your hard drive.

 


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