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PSU problem (or not)?

post #1 of 7
Thread Starter 
I have now had about five random shutdowns of my pc (system below)... twice while playing a game, once while writing a disk (delayed me seeing two episodes of Heroes for three days, was my last disk ) and once while listening to music... (I can't get the system to restart by simply pressing the on button... I have to put it off at the plug, wait a couple of seconds and only then will it power on...)

Speedfan reports my 12v as 11.84v (surfing and folding at present)... the oddest thing for me is my -5V is reported as -3.25v...

Other than that I'm stumped... what should I do to test the integrity of my PSU (free easy solutions please )...

...well any assistance would be greatly appreciated (*cough+repcough*)
po-ta-toe
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po-ta-toe
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post #2 of 7
To make the final test, use a multimeter, and a 4pin molex in order to test 12v and 5v. But it does indeed sound like a PSU issue. If you are needing a psu and on a budget, pm me or whatever for your budget, and I will find you a PSU.
My System
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My System
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post #3 of 7
It does sound and look like a psu problem, first ive never really heard of premium, and second a 320w psu powering a c2d system prolly isnt gonna be up to the challenge. While performaning any stressing tasks like burning and decoding a dvd or playing a game, your system is very unstable because your psu cant provide enough power, i have the same issues with my pc when it was oc'd to high and my psu wasnt providing enough power. So id start looking at another psu. This ranking chart would probably help .

http://xtremesystems.org/forums/showthread.php?t=108088
cour tew duo ftw!
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cour tew duo ftw!
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post #4 of 7
Hi.

What is the amperage that of your PSU?

Take a look at your hardware specs and add up the amperage use of all hardware, then compare to the output of the PSU.

Note that some amperages are listed as "max", and that the hardware will not always be drawing that much power.

It is advisable to have some headroom.

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Flux
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post #5 of 7
put digital volt multitester on a freed up molex....search the guide via google "test psu"

should be more accurate than speedfan...

but from the symptoms alone it sound like the psu is on the brink...

you are powering a duo core with a generic 320w psu? tsk tsk

(I dont know whats available in africa...sorry about that didnt mean to be condescending)
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pscott
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post #6 of 7
Don't worry about the -5V reading. Most new PSUs don't have a -5V rail so that's likely why the reading is incorrect.
    
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post #7 of 7
Speedfan reports my 12v as 11.84v... and my Multi-Meter says 12.30v.
$265 MacBook Pro
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$265 MacBook Pro
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