Help! My computer just made a loud bang and won't turn on

EdwardTeach

EdwardTeach

EdwardTeach

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18 Mar 2010
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As described my computer has something seriously wrong with it.

I was web browsing when my computer just turned itself off. I turned it back on and there was a loud bang or pop and the computer won't turn on.

I can't see any smoke or detect any bad smell wheivh makes it had to locate where the problem was. I suspect however that it was in my psu.

I have opened up the case and it would seem that when power is turned on at plugpoing nothing gets through yo the computer e.g no lights/ fans turn on etc

this suggests to me it is the psu?

My computer spec is given in my sig below. It is approx 1 month old and has not been overclocked. I have been keeping a close eye on the temps, have 5 fans etc

I am at a bit of a loss as to what may have caused this?

Thanks
 
There was no obvious smell.

I should add I was using a belkin surgemaster power splitter. The other components plugged into that are working fine.

I am hoping it was just the fuse in the plug........
 
I am not home at the minute, but will check the caps and try paperclipping the psu when I get back. If it is the psu and I need to return it to ocuk doesn anyone know how much it is going to cost to send it, and if there are cheaper alternatives for a parcel of this size than the royal mail?

Is there any chance I will be able to recover my postage costs from corsair?
 
waso_dude said:
Make sure when testing the PSU you have a fan plugging in a molex one.

If you don't have anything to power when you do this, it won't work anyhow.

Also the fan will show its working too.
Click to expand...

Sorry if I have misunderstood you - do you mean have a fan plugged into the psu directly? All my fans are powered via the mobo.
 
Speed said:
Not true, it will run regardless of what is plugged into it.

But I agree, plugging something like a fan into it will help gauge that it is providing power. However a multimeter is a better way of confirming that the correct voltage is being provided, although not everyone has one.
Click to expand...

Yup I do not have a multimeter. How much do they cost? I presume I could get one in somewhere like ******.
 
Ok guys I have tried the paperclip "technique"! Thanks for the diagram Speed.

Nothing happened e.g the psu fan didn't turn on.

Can I be fairly confident that the probl is with the psu now?

I really don't want to post it off only to be told that there is nothing wrong.

I probably could get hold of another psu tonight, though it would likely involve a 2hr round trip around London. If I did get a psu it is almost certainly not going to be a 750w (at a guess it will prob be half that- whatever someone like dell puts in their pc's)
will a much lower wat psu be able to power my system - and what steps should intake to reduce the load?

E.g i was planing to only give power to my ssd boot drive and the motherboard.

If the grapics card is attached to the mobo but not given any power will the computer turn on ok?
 
I wasn't planning to get a 300w psu to run the computer, just to try turning it on- so that I could 100% confirm that the fault lies in my psu.

If I got a 300w psu, and plugged in my mobo, 5850, ssd etc would the computer turn on?

If it did would I be risking blowing the psu?
 
What is likely to have caused the problem in the first place?

I don't want get a replacement only for that to blow up as well.

(the computer had just been used "normally" no overclocking,and had only been in 5min when it blew)
 
Fairly new build, don't remember exactly but aprox 4-6 weeks.

Nothing has been changed for over a week (and that was just reseating the CPU heatsink)

I am just surprised this happened with a brand new corsair. Guess I was just unlucky:
 
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