New PC Problem

[schw00py]

Ok so i just ordered parts off the internet for my new pc. I have everything plugged in and set up, and then i plug in my power supply and flip the switch, and it makes this weird whinning noise, at first my friends thought it was because the psu was bad but i tried another one which i was sure worked and it still made the same sound. Anyone have any idea what problem i might have any help would be much appreciated, thank you

 

[ChipDeath]

"Weird Whining noise"?

Something like a whine from a fan, or more like a speaker-generated beep/warble/siren?

Do you actually see anything on the screen?

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Epox 8RDA+ V1.1 w/ Custom NB HS
XP1700+ @200x10 (~2Ghz), 1.4 Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro @412/740

 

[schw00py]

No like after i turn on the power supply it makes this noise, but the computer isnt even booted up yet, and wont boot up, im thinking its something with the motherboard but i dont know what or where

 

[ChipDeath]

What does the noise sound like?

Take the case off, boot it up and try to hear whereabouts it's coming from.

Unplug everything apart from CPU, 1 stick of RAM and the gfx card, and see if it gets anywhere.

---
Epox 8RDA+ V1.1 w/ Custom NB HS
XP1700+ @200x10 (~2Ghz), 1.4 Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro @412/740

 

[schw00py]

Ok well one thing i know is that when i unplug the power to the motherboard the sound stops when i turn on the psu, so im guessing its a problem with the motherboard, since nothing else is making the noise that has power to it

 

[ChipDeath]

Try unplugging most of the stuff like I suggested above.

If you still have problems, try removing the motherboard from the case, and place it on a non-conductive surface (a wooden table, or on the box it came in), and plug in power, RAM & graphics, and try it like that.

If that works, then it must be shorting out against the case - you've probably got a little rogue metal standoff screwed into the case, which doesn't line up with a screw-hole on the motherboard.

What components are you using? If it's a P4 system, make sure you've plugged the little square 4-pin connector from the power supply into the motherboard as well as the larger 20-pin connector.

---
Epox 8RDA+ V1.1 w/ Custom NB HS
XP1700+ @200x10 (~2Ghz), 1.4 Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro @412/740