[lotustp]

Hi Guys, so the other day i assembled my new PC, managed to get it working, began loading windows xp and then my comp crashed during the format of the hard drive for some reason?
Now it won't boot, all that happens is all the fans give a little stutter and then nothing.
I have tested the PSU, its fine.
I've tested the system with mobo out of the case to eliminate shorting as a problem, still not working.
I took the CPU and heatsink fan out, in an attempt to see whether it is the cpu causing the problem, the same thing happened, stutter then nothing. Which makes me think it is not the cpu's fault.

Now i'm thinking that my motherboard is the problem
brand new Gigabyte MA785GT-UD3H
with AMD AM3 Phenom II tri core 720bb processor.

Any help would be greatly appreciated

 

[lotustp]

Maybe my PSU is not big enough? however i am doubtful of this.
it is an Arctic Cooling Fusion 550r
that should be ample power for my system?

4gb DDR3 Ram
808gb HD 7200 rpm
1gb ATI Radeon HD5750 graphics card
LG DVD reader/burner

plus the CPU and mobo mentioned above

 

[Tumbleweed36]

And, the power supply brand name is a weak one, plus you need to be up to 650 watts for that video card.

http://www.newegg.com/Product/Produ...r=BESTMATCH&Description=corsair+650&x=18&y=34

Are you certain that you have only one motherboard post (standoff) for each hole, no more, no less?

Are you certain the CPU/Heatsink is snapped clear in?

 

[lotustp]

Hi there,
there are 6 standoffs for the motherboard in the case, however on the mobo there are 7 holes for standoffs.
but i have tested the motherboard outside the case and still get the problem.

i used the newegg power supply calculator and it recommended that i use about a 520watt psu, so i went for a 550.

is that psu you linked me good for my system or do i need to go higher?

and yep, cpu and heatsink all clipped in firmly.

 

[Tyree]

You have everything installed in the case even though you had the same problems on the bench? Your symptoms sound like a power issue.
I would suggest bench testing, again.

Remove everything from the case.
Set the motherboard on a non conductive surface. The motherboard box is perfect for this. DO NOT PLACE THE MOTHERBOARD ON THE STATIC BAG! It can actually conduct electricity!
Install the CPU and heat sink.
Install 1 stick of RAM.
Install the video card and attach the power supply connection(s) to the card if your card needs it.
Connect the monitor to the video card.
Connect the power supply to the motherboard with both the 24pin main ATX Power connection and the separate 4 or 8 pin power connection.
Connect power to the power supply.
Do NOT connect ANYTHING else. Make sure you have the power connector on the CPU fan connected.
Use a small screwdriver to momentarily short the power switch connector on the motherboard. Consult your motherboard manual to find which two pins connect to your case's power switch. Then touch both pins with a screwdriver to complete the circuit and boot the system.

If all is well, it should power up and you should get a display. Then assemble the parts into the case and try again. If the system now fails to boot, you have a short in the case and need to recheck your motherboard standoffs.

If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective.