Strange 7800 Issue

[denfenn]

When I installed my new 7800 GS AGP for the first time, everything posted but when windows started to load, I got a "no signal" message on my monitor. The same thing happens when I try to go into safe mode. I put an old FX 5200 in and everything is OK.

I checked the molex connector to the 7800 and it was secure.Before I installed the 7800, I uninstalled the Forceware dirvers.
Any ideas on possible fixes are welcome before I RMA the card.
Thanks.

Athlon XP 2800+
Ultra X-Finity 600W (new)
Win XP sp2
1 GB Ram
ASUS A7N8X

 

[LittleNemoNES]

what monitor are you using? Is it a viewsonic?

 

[denfenn]

Yes, it's a Viewsonic VP 912b 19" LCD. One thing I forgot to mention, I don't have the monitor drivers installed. Should that make a difference ?

Thanks,

 

[nullpointerus]

I don't suppose safe mode makes any difference?

What about BIOS settings? Can you disable 1 WS Read/Write and lower AGP mode to 4x?

If needed, see the following guide for explanations of BIOS settings:
http://www.techarp.com/freebog.aspx

EDIT 1: Google search seems to turn up a lot of hits for "A7N8X 7800 no signal" (without the quotes). Might want to check these out.

EDIT 2: This may be what you're looking for:
http://forums.guru3d.com/showthread.php?t=165256