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Computer won't Start


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#1
gta_master11987

gta_master11987

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I bought a new psu and when i finished installing it, the computer won't start. i plugged in everything correctly and i also tested it tomake sure it is not defective. when i push the power button nothing happens, not even a light or sound. Then i put my old psu back and everything works perfectly. can someone tell why my new psu won't start my computer?
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#2
Neil Jones

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Do you have an on/off switch on the new PSU itself?
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#3
Ozzyb

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I take it thats a yes :)
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#4
Highl0w

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What is the power output of the two. The new one may not be abele to turen it on. info on the two devices would be helpfull.
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#5
Neil Jones

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I take it thats a yes :)


Asking the obvious usually solves the problem because most PSUs come with that on/off switch in the off position, and most that are being replaced don't have this switch so it generally goes unnoticed on the new one.
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#6
gta_master11987

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i turned the on/off switch at the back to "on" already and the computer still won't start

the new psu is antec 430W and the old psu is a 300W no name psu that came with the computer

Edited by gta_master11987, 28 December 2007 - 11:25 AM.

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#7
Neil Jones

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How did you test it to make sure it wasn't defective in the first instance?
Note that if you just plugged it in without a load on it, you'll have burnt it out.
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#8
sandman01086

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also check the voltage switch is set correctly (100 and something for US and 240 for UK) little slide switch, usually have to get a pen or something to switch it
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