ATX 12v power connector

[aju_urs]

hi guys,

i had a problem as my computer was switched off suddenly.after all the checkings i found that 12v atx power connector on mother board is not functioning.

case1: i tried connected both the 20pin and 12vatx pin and try switching on power nothing moves

case2: i tries connecting only 20pin on motherboard the power comes and fan on the proccesor starts moving. but if i connect both the pins on motherboard nothing is happening

so can anyone please tell me what is the problem and what i have to replace.
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[N3051M]

you're PSU might have blown.. Replace that first.

If its a crappy generic PSU, then it could have taken more than just itself out when your power cut.

 

[aju_urs]

hi

ya idid replace the power supply unit
but still the same problem

 

[foozy]

the power comes and fan on the proccesor starts moving

Does it speed up to full RPM? Or does it just flutter a bit and die, with power still being applied?

If it just flutters thats a good indication of a blown motherboard or melted cpu, which is a whole 'nother mess of problems.