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psu problems

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by callum_learmonth

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i am havin a problem with my pc it keeps goin crazy i get lines aross the screen shutsdown fo no reason wont boot crashes randomly and i look ed at my vlotage and all were ok except 3.3v so i unpluged every thing from my power supply except the mb one haard drive and the basic things required to run a pc and it seems to be workin now could the 3.3v be the problem?

12 replies

by Former member

Take out your graphic card and replace with another good/working card, now boot up and see if it is still giving you a headache.

Please post back if you have any more problems or questions.

by oh smeg

As well as what it is running would be useful here.

If it is small or a really cheap nasty one it may be overloaded causing this problem in which case it needs replacing before it destroys anything.

If it is a Good Powerful PS there could be other factors at play here but my best guess with the little you have provided is Replace the PS with a Known Good One and see what happens. If it now works correctly you are up for a replacement PS or if it is Under Guarantee you need to have it replaced by the Maker.

Col

by callum_learmonth

itis a hiper 580watt when i unplug my x1900 ati graphics card and my two spare hard drives and 3 gigg of ram the 3.3v rreading is ok but if i plug every thing in it drops to 2.7v

by mamies

as was suggested earlier in the forum unplug one component then test, then when you get the problem it will help you identify what is causing it

by callum_learmonth

itis a hiper 580watt when i unplug my x1900 ati graphics card and my two spare hard drives and 3 gigg of ram the 3.3v rreading is ok but if i plug every thing in it drops to 2.7v

by callum_learmonth

i am running a hipper 580watt ps mb is a asus a8r-mvp gpu is an ati x1900 sound card is sbn xfi falatily 3 hhd are 2 200gigg hhd and a 1tb hhd 4 giggs ram 2 dvd writers

by thechas

It does sound like you have a pretty heavy load on your power supply.

How many extra cooling fans are you running?

And, are you over-clocking?

Next, check how hot the air is coming out the back of the power supply. I suspect you will find that the exhaust is quite warm.

Of course, if you are like many people, you have most of your case fans set to exhaust air. If there is very little air flow out the power supply fan, you may be cooking your power supply by starving the air flow.

I prefer to have 10% to 20% more air going into the box than being exhausted. Saves using the drives as air filters.

But, I digress, if the power supply is running hot, you need a bigger supply. 680 watts should be enough.

If the power supply is running cool, then, you have a bad supply and just need to get a new one.

Chas

by Former member

Get one around the 750 to 780 watts.
This will give you ample power for your drives.
I had similar power supply and i started to get errors, so i got a 750 watt power supply and then the errors stopped. Plus all of my drives/USB and firewire ports are well looked after now. So i would go along with the others on this post about upping your power supply.
:)

Please post back if you have any more problems or questions.

by callum_learmonth

thank you all for ur sugestion bought and 650 watt psu today and my pc is runny perfect

by Former member

It is nice when everything is running just how you like it. Now all you have to get is a second drive or an external drive so that you can store your files and programs. Unless of course you already have as of which you can discard this post. :)

Please post back if you have any more problems or questions.

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