Asus P5WD2-E Premium +Pentium D 805 no boot problem.

Trying to make a rig with the Asus P5WD2-E Premium + Pentium D 805
Got sucked in by the overclocking potential

Can't get it to boot. The only thing that happens is the fan comes on
thats all. No beeps, no motherboard, nothing on the monitor

Does anyone know if maybe I need a different bios? Does the 050
version work with with the dual core 805

Any help would be appreciated

 

Unless you have a truly ancient BIOS it should work. I presume that you
are trying to come up in a "stock" configuration (no overclocking).
This is usually a simple, kind of obvious problem, it's rare for this to
actually be a bad part (motherboard, CPU, memory, etc.).

Start by stripping down to a base system. Remove all cards except
video, disconnect everything (all drives, of all types). Motherboard,
ONE memory module, CPU, video card, NOTHING ELSE.

Double-check all jumpers. Check the battery and clear CMOS jumpers.
Check the power supply connections. Check the CPU for proper installation.

 

By the way, disconnect the keyboard and mouse also. I've seen this
happen when the keyboard and mouse were both plugged into the wrong
socket (keyboard in mouse socket & vice-versa).

 

Is the ATX 12V 2x2 power connector connected ?
There is no beep if the CPU is not getting power.

What are you using for a power supply ?

Paul

 

We've been testing a P5WD2-E Premium with a Pentium D 950
CPU and it powered right up. PSU is Enermax Liberty 620 W
and all of the power supply sockets on the otherboard were
populated, i.e., 20-pin + 4-pin main power, both ATX-12V
4-pin, and single Molex. Still running OK after 4 days of
burn-in. The power setup is probably very important for this
motherboard and the Pentium D CPU's.

 

You neglect to mention which BIOS came on the mainboard, but you need
at least BIOS 0301 for that CPU.

Fans coming on but no beeps or nothing is just what happened to me when
I tried to install a Pentium 965 on this board and it only had BIOS 0302.

 

If you have a dual rail power supply (and I think you do), using both
the ATX12V and the EZ plug will short the two rails together, which is
not a good idea. First, it defeats the whole purpose of the two
independent rails. Second, the voltage output of the two independent 12
volt rails is not EXACTLY the same, and you can get substantial currents
running between the two rails, which is bad for everything in the system.

I'd suggest that you remove the "EZ-Plug".

 

Let the "GAMES" Begin !!

 

12V2 powers only the processor.

12V1 powers motherboard and disk drive connectors. Thus, when
EZPlug is connected to the motherboard, it is the same 12V1
which is present on the main ATX power connector.

Paul

 

For more info on ATX power supplies, see Pg.37 and Pg.38:

http://www.formfactors.org/developer/specs/ATX12V_PSDG_2_2_public_br2.pdf

Paul

 

The "EZ-Plug" (which is a non-standard proprietary Asus invention not
covered by any standards) is an alternative to the ATX12V connector. On
the motherboard, the ATX12V connector and the EZ Plug are tied togehter
(in fact, they are more than tied together, they are just two different
connectors for the same foil runs). Thus, if you use both the ATX12V
connector and the EZ Plug, you are tying the two rails together, which
is not a good idea and which can cause problems. In effect, if you use
both the EZ-Plug and the ATX12V connectors, you are using both rails to
power the processor.

 

The EZPlug was in parallel with the ATX12V 2x2 connector, on
some of the original P4 boards. My P4B motherboard has that
connector. This is from the P4B-105.pdf downloadable manual:

"In addition to the 20-pin ATXPWR connector, this motherboard
requires that you connect the 4-pin ATX +12V power plug to
provide sufficient power to the CPU.

If you are using a standard ATX power supply that does not
have the ATX +12V plug, connect one 4-pin device power plug
to the ASUS EZ Plug connector labeled AUX +12V."

So, in that case EZPlug is in parallel with the ATX 12V 2x2.

Now, we look at the instructions in a recent board with EZPlug.
From the P5WD2-E Premium manual:

"When installing two VGA cards using a 20-pin ATX PSU with
sufficient +12V capability, we recommend that you connect
the EZ Plug for better current path from +12V. Refer to the
PSU documentation for dual VGA power requirements."

The video card +12V rail is separate from the ATX12V 2x2. The
video card runs from 12V1, and so does a Molex disk drive connector.
On a pre-ATX 2.0+ power supply, all 12V are the same, so that
one isn't a problem either.

So, times have changed Barry. The EZ Plug used to be used as
a substitute for a missing ATX12V 2x2 connector. Now, it is
used to provide extra current for the video card, and that is
an entirely different thing.

Stop trying to confuse people!

Paul

 

Same Issues

I have the same issue. i stripped the mobo down to bare metal and still no boot. This is also on my RMA'd board. so this is the 2nd one i get. The issues are not the bios from what i can see, more of a chip issue. Bios issue would at least give a beep, this mobo is dead silent of any chirps.

I think it's time Asus recognizes this and posts this as an issue on the website. Online forums are plagued with people having this issue.