first build, wont turn on

[j_rotten]

ok here goes its my first build. i got every thing together and it would turn on the fans where turn, hdd and cd rom spining but nothing on screen. just the no singal thing. ok so i start reseatting everything. well after reseatting the ram it won't turn on now. no fans no light on mobo so i try the hal methd but no go i thinking it the cpu cause it the only thing that is second hand i bought it off ebay.
here the spec:
msi 848p neo-v
p4 3.0ghz 800fsb 1mb cach
kingmax 512mhz pc3200 ddr400
hitachi 80g sata
lite on dvd cd-rw combo
rosewell ati 9600xt
ex vigor 400 400wt

i took the cpu out of a 1.6ghz 512 sdram compaq thats two yrs old and try it but the same thing nothing. i try puting the new cpu in the compaq but didn't post. i try everything i can think of clearing coms and taking of case and still nothing so anything you guys can help me with would be great thanks and
HAPPY NEW YEAR

[g-dogg]

Ok, if your p4 3.0 wont work in the compaq i think it is because the board might not be able to take a 3.0 since it was designed for a 1.6, Make sure everything in its place tight, especially the video card and processor. If that doesnt work then maybe your processor is/ was already dead since you bought it off ebay. wish what i offered works for you.

Happy new year to you too!!!

g-dogg

[Cricket]

Did you plug both power connectors from the power supply into the motherboard?

I've never heard of that power supply brand and would try another one (but not the one in the Compaqa).

Cricket

[simonkee]

I've just completed my first build and had a similar problem. It turned out to be something really simple - the mobo required 2 power connections from the PSU!
Firstly check the mobos working by only putting in one memory stick and connect the PSU - no peripherals. If it bleeps it works. You could also check if the CPU is working by removing the heatsink and switching the power on. If it heats up quickly it works but dont leave it too long or you'll fry it!
But in failing that I would take everything out and start again.
Im certainly no expert but hope that helps!

[j_rotten]

ok i try another psuand no go it did the smae thing. i edid plug everything in and still nothing

[Cricket]

Have you tried the video card in another PC yet?

You're still working with the motherboard out of the case, right? If you are and you're sure nothing is grounding out the motherboard, then is does sound as if the motherboard or CPU is dead.

Cricket

[j_rotten]

yes i been test all out of case and yes the video card work in other machine so you think cpu or motherboard how do i find out which one there no light on the motherboard

[Cricket]

I would suspect the motherboard before I thought the CPU was bad.

Cricket