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Asus A8N-SLI Videocard Compatability

Last response: in Motherboards
October 10, 2010 2:05:01 PM

I have an ASUS A8N-SLI mobo that's been sitting on my shelf or a few years. I've built several machines since buying it and had just about forgotten I had it. I bought an AMD Athlon 64 Socket 939 processor and 4 1gb sticks of DDR-400. The board doesn't have on-board video o I installed an ASUS EN8400GS 512 DDR2 PCIe 2.0 16x video card. When I powered it up for the 1st time, I got no graphics, just a beep code. 1 long beep & 2 short beeps. I looked up the codes & the only thing it indicated was an issue with the video. I was told by a tech in a local shop that a 2.0 card wouldn't work in a 1.0 slot. All of the cards I've been able to find so far are low profile 1.0 x16. Tiger Direct had one but it was sold out. Does anyone know where I can get a high profile PCIe 1.0 x16 card that will work on this board.
a c 236 V Motherboard
a b Ĉ ASUS
October 10, 2010 2:41:47 PM

Your Tech Shop was wrong.. PCIe 2.0 is backwards compatable with PCIe 1.0., so it isn't an issue with the slot difference :) 

1) Have you looked to replace the CMOS battery since the board has been sitting for a long while & could've went dead.

2) Have you tested the GPU in another system to make sure it works.

3) Here is a good guide for troubleshooting...
a c 1160 V Motherboard
a c 306 Ĉ ASUS
October 10, 2010 3:21:36 PM

Another thing to add to that list is upgrading to a newer BIOS since if there were bugs with 2.0 cards in that board it would have been fixed with a BIOS update by Asus.
October 10, 2010 7:15:56 PM

I know they're schiesters, theirs was the last of 4 small shops I visited. They tried to get me to buy a generic card for $20 with no promise it would work & no return if it didn't. I should have known PCIe is backwards compatable, but I was outnumbered 3-1.

Anyway, this isn't my 1st build, but it is my 1st in a while without on-board video. So not being able to see the monitor light up right away is new to me.

The 1st thing I replaced was the cmos battery, the voltage was under 1v.
The CPU had 2 bent pins when it arrived so I broke out my loop & tweezers.

I just checked the card in another machine and it works fine.

I checked the link and no issues there. Still stuck.... Maybe it's the CPU???

Any other thoughts?