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PSU and CPU

Last response: in Components
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June 21, 2012 4:17:31 PM

I just bought a New GTX 550 ti and a Corsair GS500 PSU.
When i connected the psu to the motherboard, harddisk, DVD writer, Graphics card and tried to switch on the pc.

The Fans on the PSU, Graphics card and the processor keeps switching on and off in an orderly manner repetitively.
and the CPU doesnt power up.

When i used my old PSU it works fine.

More about : psu cpu

June 21, 2012 4:18:29 PM

what is the problem ?

Thank you for ur help :) 
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a b U Graphics card
June 21, 2012 5:36:53 PM

Then use your old psu and return the one that seems dead.
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June 21, 2012 5:54:48 PM

the problem is the old psu cannot run the GTX 550
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!