I think it means it doesn't see any card in the second slot! Doesn't that board have a card between the slots that selects SLI or non-SLI mode?
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the manual explains that sli AUTO is the default..it is suppossed to be able to tell if there is one or two video cards...
but, instead the auto tried to detect two video cards...one not being there...cause the power fail message.
that said...i had another problem soon after...where the colour would be perfect on first boot...
but then would be washed over by a very dark blue...and in subsequent boots a light blue..
(eg boot text was light blue instead of white...and red looked like a yellow)
I took it in..and he did something to motherboard..i couldN'T make out what..'cause he kept saying he switched bios settings to how he liked it..and yet indicated he had done something to the motherboard)
i mention it here..because i noticed..when he booted up.. there was NO power fail message even though he had changed SLI back to auto. (and then he changed it to single when i said that was only bios change i had made)
anyways, bottom line is i'm still baffled by it..but at least its rock solid now...and so impressively QUIET! )
<P ID="edit"><FONT SIZE=-1><EM>Edited by redstar on 02/27/05 08:21 PM.</EM></FONT></P>
Yep! This is Asus Fault. The manual *DOES* state that the card is set for single graphics card as a default. However, if you look closely at the motherboard, you will see that the DUAL CARD arrows are pointing to the slot direction which means the card is set for SLI mode.
You have to change the card so the arrows for the SINGLE SLOT is pointing to the insert slot.
New rule of thumb; Trust your eyes...not the manual!
Asus A8N-SLI DX
1 Gig DR400(Dual)
Asus Star Ice (CPU Cooler)
OCZ PowerStream 520PSU
2 Nvidia 6800GT SLI
Lian Li PC-V2000B MOD w blowhole