P5P800 Won't POST

Fred Mayfield wrote:

 > Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
 > board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
 > etc. and it won't POST. The CPU fan comes on and a green LED on the
 > motherboard lights up to show power is applied. Only thing that struck me as
 > unusual is that the 350W power supply only has 20 pins with the plug on the
 > MB has 24. The way the connector is keyed, it only fits onto the connector
 > one way .... buttttttt, it don't seem right.
 >

Have you made sure that the CPU fan is firmly connected? I had similar
problems with this board. The new mounting method sucks in my opinion.
There is no positive indication that it is properly mounted. It works
fine with a 20 pin connector but I upgraded to one with the 24 pin
connector to see if it made any difference.


 > Anybody know anything about the connector differences? I logged a support
 > request on the Asus web site ..... buttttttt, who knows, maybe they'll
 > respond.
 >
 > Also, I don't have any experience with a SATA HDD. Do they partition and
 > format in a manner similar to an IDE drive or are there secrets to make it
 > easier?
 >
 > TYIA
 >
 > Fredman
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

You have a mother board that uses the new ATX version 2 power supply.
Follow the link and read all about it.

<a style='text-decoration: underline;' href="http://www.tomshardware.com/howto/20041223/index.html" target="_blank">http://www.tomshardware.com/howto/20041223/index.html</a>

Homer

"Fred Mayfield" <mayfield RemoveThis @nuevanet.net> wrote in message
news:q_eId.21943$iC4.11086@newssvr30.news.prodigy.com...
 > Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
 > board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
 > etc. and it won't POST. The CPU fan comes on and a green LED on the
 > motherboard lights up to show power is applied. Only thing that struck me
 > as
 > unusual is that the 350W power supply only has 20 pins with the plug on
 > the
 > MB has 24. The way the connector is keyed, it only fits onto the connector
 > one way .... buttttttt, it don't seem right.
 >
 > Anybody know anything about the connector differences? I logged a support
 > request on the Asus web site ..... buttttttt, who knows, maybe they'll
 > respond.
 >
 > Also, I don't have any experience with a SATA HDD. Do they partition and
 > format in a manner similar to an IDE drive or are there secrets to make it
 > easier?
 >
 > TYIA
 >
 > Fredman
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

In article <q_eId.21943$iC4.11086@newssvr30.news.prodigy.com>, "Fred
Mayfield" <mayfield.DeleteThis@nuevanet.net> wrote:

 > Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
 > board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
 > etc. and it won't POST. The CPU fan comes on and a green LED on the
 > motherboard lights up to show power is applied. Only thing that struck me as
 > unusual is that the 350W power supply only has 20 pins with the plug on the
 > MB has 24. The way the connector is keyed, it only fits onto the connector
 > one way .... buttttttt, it don't seem right.
 >
 > Anybody know anything about the connector differences? I logged a support
 > request on the Asus web site ..... buttttttt, who knows, maybe they'll
 > respond.
 >
 > Also, I don't have any experience with a SATA HDD. Do they partition and
 > format in a manner similar to an IDE drive or are there secrets to make it
 > easier?
 >
 > TYIA
 >
 > Fredman

Is the 2x2 ATX12V power connector in the upper left hand
corner connected ?

The 24 pin connector has four extra pins (+3.3, +5, +12, GND).
These were added for PCI Express powering.

Your board doesn't have PCI Express, as far as I know.
It is an AGP board.

This is the power information from the AGP 3.0 spec, for
power flowing through the AGP slot connector:

Symbol Parameter Condition Min Max Notes
Vddq1.5 I/O Supply Voltage IMAX=2.0A 1.425 1.575V 1, 2
VCC3.3 3.3V Power Supply IMAX=6.0A 3.15 3.45V
3.3VAUX 3.3V Auxiliary IMAX=0.375A 3.15 3.45V
VCC5 5V Power Supply IMAX=2.0A 4.75 5.25V
VCC12 12V Power Supply IMAX=1.0A 11.4 12.6V

The +12V feeding the AGP slot is limited to 1 amp consumption
through the slot connector. If any additional +12V is
required, a separate connector on the AGP card takes care
of it. Roughly translated, this means the additional +12V pin
on the 24 pin power connector, will not be of much use.
For the P5P800 only, that means a 20 pin ATX power connector
should be adequate to power the board. The board is, after
all, a P4P800 with a LGA775 processor socket stuck on it.
And the P4P800 uses a 20 pin ATX power connector.

Other members of the P5xxx family of boards, are PCI Express
based. More power can be drawn through a PCI Express slot,
but how much more I cannot tell you, as finding that kind of
detail without buying a spec is hard to do.

Paul<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

The power requirements in the manual states that you need a 24 pin ATX
power supply and a 4 pin 12volt plug. ATX version 2, on page xii in the
manual. Give it a look.

Homer

"Fred Mayfield" <mayfield DeleteThis @nuevanet.net> wrote in message
news:q_eId.21943$iC4.11086@newssvr30.news.prodigy.com...
 > Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
 > board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
 > etc. and it won't POST. The CPU fan comes on and a green LED on the
 > motherboard lights up to show power is applied. Only thing that struck me
 > as
 > unusual is that the 350W power supply only has 20 pins with the plug on
 > the
 > MB has 24. The way the connector is keyed, it only fits onto the connector
 > one way .... buttttttt, it don't seem right.
 >
 > Anybody know anything about the connector differences? I logged a support
 > request on the Asus web site ..... buttttttt, who knows, maybe they'll
 > respond.
 >
 > Also, I don't have any experience with a SATA HDD. Do they partition and
 > format in a manner similar to an IDE drive or are there secrets to make it
 > easier?
 >
 > TYIA
 >
 > Fredman
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

"Fred Mayfield" <mayfield RemoveThis @nuevanet.net> wrote in message
news:q_eId.21943$iC4.11086@newssvr30.news.prodigy.com...
 > Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
 > board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
 > etc. and it won't POST. The CPU fan comes on and a green LED on the
 > motherboard lights up to show power is applied. Only thing that struck me
 > as
 > unusual is that the 350W power supply only has 20 pins with the plug on
 > the
 > MB has 24. The way the connector is keyed, it only fits onto the connector
 > one way .... buttttttt, it don't seem right.
 >
 > Anybody know anything about the connector differences? I logged a support
 > request on the Asus web site ..... buttttttt, who knows, maybe they'll
 > respond.
 >
 > Also, I don't have any experience with a SATA HDD. Do they partition and
 > format in a manner similar to an IDE drive or are there secrets to make it
 > easier?
 >
 > TYIA
 >
 > Fredman
 >
 >There are 20/24 pin adapters available allowing the use of regular PSUs. A
 >google search will find suppliers.<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

Homer wrote:

 > The power requirements in the manual states that you need a 24 pin ATX
 > power supply and a 4 pin 12volt plug. ATX version 2, on page xii in the
 > manual. Give it a look.
 >

Page 2-28 says that you Can use a 20 pin connector if it can provide at
least 8A on the +12V lead and at least 1A on the +5V standby lead. I
have this board and it booted fine with a Zalman 400 power supply with
the 20 pin connector.


 > Homer
 >
 > "Fred Mayfield" <mayfield.TakeThisOut@nuevanet.net> wrote in message
 > news:q_eId.21943$iC4.11086@newssvr30.news.prodigy.com...
 >
  >>Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
  >>board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
  >>etc. and it won't POST. The CPU fan comes on and a green LED on the
  >>motherboard lights up to show power is applied. Only thing that struck me
  >>as
  >>unusual is that the 350W power supply only has 20 pins with the plug on
  >>the
  >>MB has 24. The way the connector is keyed, it only fits onto the connector
  >>one way .... buttttttt, it don't seem right.
  >>
  >>Anybody know anything about the connector differences? I logged a support
  >>request on the Asus web site ..... buttttttt, who knows, maybe they'll
  >>respond.
  >>
  >>Also, I don't have any experience with a SATA HDD. Do they partition and
  >>format in a manner similar to an IDE drive or are there secrets to make it
  >>easier?
  >>
  >>TYIA
  >>
  >>Fredman
  >>
  >>
 >
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

On Mon, 24 Jan 2005 09:57:00 GMT, "Michael W. Ryder"
<mwryder RemoveThis @_worldnet.att.net> wrote:

 >Homer wrote:
 >
  >> The power requirements in the manual states that you need a 24 pin ATX
  >> power supply and a 4 pin 12volt plug. ATX version 2, on page xii in the
  >> manual. Give it a look.
  >>
 >
 >Page 2-28 says that you Can use a 20 pin connector if it can provide at
 >least 8A on the +12V lead and at least 1A on the +5V standby lead. I
 >have this board and it booted fine with a Zalman 400 power supply with
 >the 20 pin connector.
 >
 >
  >> Homer
  >>
  >> "Fred Mayfield" <mayfield RemoveThis @nuevanet.net> wrote in message
  >> news:q_eId.21943$iC4.11086@newssvr30.news.prodigy.com...
  >>
   >>>Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
   >>>board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
   >>>etc. and it won't POST. The CPU fan comes on and a green LED on the
   >>>motherboard lights up to show power is applied. Only thing that struck me
   >>>as
   >>>unusual is that the 350W power supply only has 20 pins with the plug on
   >>>the
   >>>MB has 24. The way the connector is keyed, it only fits onto the connector
   >>>one way .... buttttttt, it don't seem right.
   >>>
   >>>Anybody know anything about the connector differences? I logged a support
   >>>request on the Asus web site ..... buttttttt, who knows, maybe they'll
   >>>respond.
   >>>
   >>>Also, I don't have any experience with a SATA HDD. Do they partition and
   >>>format in a manner similar to an IDE drive or are there secrets to make it
   >>>easier?
   >>>
   >>>TYIA
   >>>
   >>>Fredman
   >>>
   >>>
  >>
  >>
  >>
Depending on your cpu speed the P4 can use upto 100 W. PCPower and
Cooling suggested a 470 W which is PCIx ready and has the 24 pin
connector. I was tempted to try my old 350 W too but after reading the
requirements above gave up.
Bill
Atlanta<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST 

A good quality ATX (20pin) power supply min. 400-450W will still work
on this board due to not having PCIe on this board.

However a 24 pin eATX V2 will be needed on some 775 boards.


On Mon, 24 Jan 2005 09:57:00 GMT, "Michael W. Ryder"
<mwryder DeleteThis @_worldnet.att.net> wrote:

 >Homer wrote:
 >
  >> The power requirements in the manual states that you need a 24 pin ATX
  >> power supply and a 4 pin 12volt plug. ATX version 2, on page xii in the
  >> manual. Give it a look.
  >>
 >
 >Page 2-28 says that you Can use a 20 pin connector if it can provide at
 >least 8A on the +12V lead and at least 1A on the +5V standby lead. I
 >have this board and it booted fine with a Zalman 400 power supply with
 >the 20 pin connector.
 >
 >
  >> Homer
  >>
  >> "Fred Mayfield" <mayfield DeleteThis @nuevanet.net> wrote in message
  >> news:q_eId.21943$iC4.11086@newssvr30.news.prodigy.com...
  >>
   >>>Among other things, I just bought new ATX case, P5P800 w/P4 520 mother
   >>>board, 2 512MB DDRs, ATI Radeon 9250, Matrox Serial ATA HDD, floppy, DVD,
   >>>etc. and it won't POST. The CPU fan comes on and a green LED on the
   >>>motherboard lights up to show power is applied. Only thing that struck me
   >>>as
   >>>unusual is that the 350W power supply only has 20 pins with the plug on
   >>>the
   >>>MB has 24. The way the connector is keyed, it only fits onto the connector
   >>>one way .... buttttttt, it don't seem right.
   >>>
   >>>Anybody know anything about the connector differences? I logged a support
   >>>request on the Asus web site ..... buttttttt, who knows, maybe they'll
   >>>respond.
   >>>
   >>>Also, I don't have any experience with a SATA HDD. Do they partition and
   >>>format in a manner similar to an IDE drive or are there secrets to make it
   >>>easier?
   >>>
   >>>TYIA
   >>>
   >>>Fredman
   >>>
   >>>
  >>
  >>
  >><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: P5P800 Won't POST