[SLL] OT--Hardware: New Build Won't go to POST

Andrew Sweger andrew at sweger.net
Sun Oct 14 04:47:16 PDT 2007


On Sat, 13 Oct 2007, Abha Harting wrote:

> When I gap the power switch, The fans on the CPU and the vga card go for
> just a puff of time and then *nada*. They don't STAY running. The PSU is a
> new Thermaltake 500watts--is that good enough?  In the recent past, you
> didn't need drives hooked up to the board to pull enough power to get it to
> post. Are we going retro on that? Do you have to put drives on this baby to
> get it to pull the juice enough to boot as you did in the "long ago" past??
> Things are changing all the time, so what you knew with certainty yesterday
> may not be true at all today.

It's normal for the fans to give a short spin just after powering up the
PSU. To initiate the power-up sequence, most mobo's need a momentary
contact on a pair of pins that are usually wired to a push button on the
front of the chassis. This is part of what allows modern systems to power
themselves on and off via software.

If this is the P5B-Plus, then check the user's manual, page 2-36 for the
system panel connection locations. It's the pins labeled PWRSW. Then check
chapter 3 for details about the power up sequence.

-- 
Andrew B. Sweger -- The great thing about multitasking is that several
                                things can go wrong at once.





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