boot code 0xFF

Hi there,

got my new S2865 together with a amd64 3700+, San Diego. After
connecting the PSU with ATX12V (20+4) the board didn't even run through
the POST. All i have is this 0xF on the LED-display. I've tried booting
without any devices, cards and RAM, no success. Also tried different
RAMs, a PCI-graphics, a PCIe. Always getting 0xff.

A web-research has shown, that 0xF seems to occur rather often. There's
a small beeper on the board, but it doesn't do anything. Before I'm
trying to get a 3500+, is there a possibility that this CPU changes
_anything_, or is this just a hw-fault?



any thoughts appreciated.

kind regards
\cd

 

In a picture of the motherboard, I see a 24 pin and I see an 8 pin
connector. What have you connected to them ? The 8 pin is probably
there for the exclusive use of the processor, and if it is unplugged,
the board won't boot.

The two bottom connectors in this figure, are likely what needs
to be connected to your board for it to boot. This is EPS12V.

http://www.pcpowercooling.com/products/assets/T51AG/mb_T51AG.gif

This is a regular ATX supply. The 12V is a 2x2 connector.
The diagram, as far as I know, is looking at the power supply
connector and not the motherboard side. Now, you may be able to
plug the 2x2 connector into the 2x4 motherboard socket, and get
the computer to start. The 2x2 plug should be enough to power
an 89W processor.

http://www.pcpowercooling.com/products/assets/T51DX/mb_T51DX.gif

Paul

 

Dear CD,

here is a link to some customer reviews at Newegg where they mention
ATX12V (one says OK, one says no go) vs. EPS12V.

You did not say what the nominal wattage of your power supply was, or
who made it, but here is a link where Tyan board owners get that code
when starting with insufficient power:

http://forumz.tomshardware.com/hardware/s2875-AVM-B1-isdn-controler-ftopict159344.html

I have a 2865 with a 430W Supermicro EPS12V power supply, 24 + 8 pins--
it has worked fine, never a boot up or any problem with it.

I strongly recommend PC Power and Cooling's 510W unit, this one being
specifically recommended for this board:

http://www.pcpowercooling.com/products/viewproduct.php?show=T51ASL&view=about

Seasonic's S12 500 and 600 would also work, having 24 + 8 pin
connectors, and sufficient output.

http://www.pcpowercooling.com/products/viewproduct.php?show=T51ASL&view=about

I do recommend the PC Power/Cooling unit: not inexpesnive, but, comes
with a 5 year warranty, and is built to last.

HTH,

BC

 

Late here, sorry, here is the real link: Seasonic units built to be
efficient, quiet...PCPC unit not silent, nor is my Supermicro PS.

http://www.seasonicusa.com/products.php?lineId=9

 

hi,

Thanks for all the guides. It seems that the 20+4 variant of my 400W PSU
simply doesn't work. I thought, it can't be that a 400W-PSU won't work,
so i built myself an EPS12 with some atx-plugs.
24-pin (built with 20+4) doesnt work, the same with 20+4(aux). It seems
the board is somehow hungry for power. Now everything's up and running
stable.

kind regards
\cd