New Motherboard Dead

  Train driver 22:43 06 Mar 2008

I have just replaced my old motherboard with a Siemens D1321 / socket 478 1.7Ghz CPU. It was supplied as fully tested but it will not start. The LED on the board flashes red and if I force the PSU to start, (green wire to 0v) the LED is steady red, fans and HDD runs but board still seems dead.
Anybody any ideas or is it truly faulty.

  MAT ALAN 23:01 06 Mar 2008

if I force the PSU to start,

Maybe its the PSU thats faulty and not the Mobo...

  Train driver 23:06 06 Mar 2008

The PSU was working fine on the old Mobo although it was only a 500Mhz CPU

  Fried~Chips 23:14 06 Mar 2008

20pin power connector to the motherboard ?
Also when connecting the Case pins talking about the power to the motherboard header make sure the Power pin is connected the correct way round on the pins.

  Train driver 23:24 06 Mar 2008

The 20 pin ATX connector is correct as it will only fit one way and the CPU fan runs but apart from the CPU fan there is no other 4 pin 12v connector from the PSU but there is a socket on the board. Am I missing something??

  Fried~Chips 23:34 06 Mar 2008

There is a Square 4pin little power connecor on the Motherboard. You need to have a PSU which has this Square 4 pin Molex connector to fit onto the motherboard. look at this digram Train Driver, at the Board Layout No.14
click here

post back if your still stuck.

  Fried~Chips 23:36 06 Mar 2008

I mean look at No. 13 just near the End of the AGP Slot. Sorry my mistake

  Train driver 23:37 06 Mar 2008

Looks like a new PSU then.
Thanks for your help.

  Fried~Chips 23:43 06 Mar 2008

If you want a new fully working PSU, Postage cost only(£5 Can send this when you recieve and fit it) send us a email and I can stick you one in the post tomorrow. You are invited to mail me via my envelope.

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