M2n-sli Deluxe (am2 nforce 570 sli atx) does not boot

I have bought a new computer to assemble at home. When I attempt to
power up, nothing happens. I know the motherboard has power as the
green led is on. However when I switch the pc on the fans on my
processor, power supply and graphics card virbrate - attempt to turn. I
have to hold the on button in for about four seconds before I can
attempt to start my pc again, with the same events as before.

If I remove everything from the board except the procesor there are no
warning beeps to tell me the ram or the graphics card are not present.

My specs are:
Amd athlon 64 x2 4200+ am2
1gb of Corsair xms2-6400 260dimm cl5 DDR2
M2n-sli Deluxe (am2 nforce 570 sli atx)
1.44 floppy drive
Liteon DVD-RW/RAM sata
2 x Maxtor DiamondMax10 160GB s300
400w power supply

My power supply works as I have tested it in another pc which booted xp
fine.

Thanks in advance

 

With the motherboard connected to the power supply, and the power
button connected to the PANEL header, does the power button allow
the power to be turned on and off properly ? That would be without
processor, RAM, or graphics installed. You should hear and see the
PSU fan operate properly, when the power button is pushed. This
test is verifying the PS_ON# logic on the motherboard. The green
LED on the motherboard should be lit steadily, and should not blink
at all (no matter what test you are doing).

If the fans "twitch" when you push the power button, but do not
spin, then the power supply could be overloaded. You can try
taking the motherboard out of the computer case, install the CPU,
and repeat your "beep" test with CPU, motherboard, and power
supply. One reason for pulling the motherboard out of the
case, is as a check that a brass standoff is not shorting to
a copper conductor on the bottom of the motherboard. With
no RAM or video card present, you should get distinctive
beep patterns.

If all fans spin, but there is no "beep" with stuff missing,
another reason for that would be the BIOS release is not
compatible with the processor. In that case, the processor
may be able to execute some number of instructions from the
BIOS chip, but the BIOS hangs in a loop early in the
sequence. The result is a failure to beep. BIOS code
execution is needed to make a beep noise through the
computer case speaker. Check the CPUsupport page, comparing
the BIOS release number printed on the top of the socketed
BIOS chip on the motherboard, to the type and stepping of
CPU you are using.

You don't say what power supply you've got. If the
power supply is Antec Neopower, some vintages of those
have been known to have problems with Asus motherboards.

If none of the above is giving encouraging signs, then
return the motherboard during your retail vendor's return
period. Some sellers rely on the Asus warranty, which is
a sign of excessive DOA motherboards. Retailers should
really handle this issue for you, during the first two
weeks of usage (it might even be the law in some
countries).

I don't see a reason to suspect the processor, but
occasionally one of those will be dead. Check for
damage to the bottom of the CPU or to the motherboard
socket, during the test where you removed the processor.
Processor testing by Intel and AMD, is hundreds of times
better than motherboard testing by Asus.

Paul

 

Probably need to upgrade the psu - I have a similar rig and a 460w psu
couldn't cope - did power up though. You'll need more than 500w.

 

Thanks, I have managed to get the motherboard working outside the case
on a woodern board.

But when I reassembled it into the case, it did not turn on so I
followed what another website had said was to leave the usb connecters
unconnected - which worked besides the fact that the motherboard
started smoking underneath the ADH connecter - the BIOS - also gave a
message that the usbs were drawing too much current and the pc was
going to shut down in fifteen seconds. I turned it off imediatly. Any
ideas why this happended, they woul dbe greatfully appreciated.

 

Thanks, I have managed to get the motherboard working outside the case
on a woodern board.

But when I reassembled it into the case, it did not turn on so I
followed what another website had said was to leave the usb connecters
unconnected - which worked besides the fact that the motherboard
started smoking underneath the ADH connecter - the BIOS - also gave a
message that the usbs were drawing too much current and the pc was
going to shut down in fifteen seconds. I turned it off imediatly. Any
ideas why this happended, they would be greatfully appreciated.

Thanks.

 

Sounds like it's shorting out when installed in the case. You need to remove
any standoffs in the case that do not match up to the motherboard
screwholes, and *carefully* check for any other points at which the
motherboard touches the case. The motherboard should *not* touch the case at
all except where the mounting screws go through it into the standoffs.

 

Reversed USB header wiring ? Standoff in the wrong place ?

If something smoked, there could be damage. Have you inspected
for damage to the PCB ? If you short something, the power supply
can deliver a lot of current, and with sufficient current, you
can burn internal conductors inside the motherboard.

As Peter explained, you are only supposed to install a brass standoff,
where there is a tin plated hole on the bottom of the motherboard.
If you had a different brand of motherboard in the computer case
than the one you are currently installing, you may find one standoff
needs to be removed. If a standoff touches an area of the board, which
is not one of those tin-plated circles, then the short can burn
something real quick.

The brass standoffs are supposed to come in contact with the tin-plated
circles. The tin-plated circles are grounded, and so are the brass
standoffs. They are at the same electrical potential, and are allowed
to touch. But if a brass standoff touched a piece of bare copper connected
to +5V, +12V and so on, then a lot of current can flow, and the
motherboard can get so hot, as to char the fiberglass.

Paul