Power Issues

[sircadian]

I have a problem that has stumped me. I have a PC that won't power on, nothing, zip, nadda. I first thought of a bad power supply, so i bought one, still nothing, zip, nadda. I figured, hmmmm....ok maybe mobo. Replaced mobo with new one kept the new PSU in and still nothing, zip, nadda. Thought ok, it's a power issue, maybe it's the switch on the case, put new mobo, new PSU and everything else in a new case, still nothing, zip, nadda. I thought ok, maybe a device is making it do this so i unhooked all case fans, optical drives and floppy from the PSU leaving only the mobo and HDD and case hooked to power, still nothing, zip, nadda.

So now i am stumped, where do i go from here what else causes a power issue like this? I made sure the case was properly ground on the mobo and that all case plugs like reset, power switch etc are in the proper places on the mobo.

Just need a little more help thinking of what it could be.

Thanks

 

[LiQuid STATus]

No fans spin at all? No lights, nothing? Have you made sure the outlet in which you're using is properly working?

 

[sircadian]

yeah...nothing, no lights, no spinning of anything. I have used several outlets and several power strips. Everything else connected to the strips work.

 

[LiQuid STATus]

You plugged the case and heatsink fan into the appropriate slots on the motherboard right?

 

[sircadian]

yes i did....exactly where the mobo specs say to. This computer was built by someone and purchased by a friend of mine of the craigslist a month ago. it worked great and then one day just shut off and wouldn't power up again. He asked me to look at it because i know more than he does. Apparently not enough though

 

[LiQuid STATus]

OH well then dude, there is your answer. If the motherboard is dead, then why are you waisting your time plugging everything into it?

 

[sircadian]

but its a brand new mobo from fry's i installed it after the problems...it is a new case, new mobo, new PSU, i installed all these after the power problems

 

[SYL\X/3K]

here are some answers

power surge might of fried ur mobo or ESD
also ur grounder on ur power cable might be not working well.
hope u find a solution or ur screwed and need to replace that new mobo