Help With My New Xfx 7900gs

[mathewdbarlow]

Hey guys, this is my first post so bear with me!

Just got a xfx 7900gs 256ram pci-e but having trouble getting it to work.

Spec:
msi-7053 925x mobo
p4 3.0ghz 2md cache 800fsb
1gb infineon 533mhz ddr2 ram (dual channel)
160gb maxtor hard drive
570 trust power supply with pci-e connection
Nothing else worth mentioning.

All parts are new and working fine I think.

Now, when I put this card in and power up it shows the details for the card on the screen, then quickly flicks to the motherboard screen where it asks iof I want to enter bios, then it resets and repeats this. It doesn;t let me enter the bios or do anything, it just keeps repeating on this cycle.

Curiously, if I plug in a ps2 keyboard then it doesn't show the mobo screen , it just keeps repeating the graphics card details and rebooting.

I am confident everything is set up correctly etc and have tried another power supply. Also tried testing each ram dimm and they seem to be fine. I really want this to work, any help would be appreciated.!!

[danroyle]

have you tried clearing the cmos or updating the bios also is that power supply up to a 7900gs they use about 18a on the 12v rail i believe

[mathewdbarlow]

I have tried clearing the bios memory using the jumper but no change. I'm sure its not the power supply as i've tried it using the pci-e connector and also using 2 molex connectors with the attachment...surely this would be enough for one card!!! Also, I checked the nvidia website and they reckon this card is alot less power hungry than its 7900 relatives.