A8N-SLI issue - Nothing happening.

So last night Robear dropped another system down my way, and after doing an inventory of what was in it, I started seeing what I could toss in my main machine:

A8N-SLI mainboard
2GB DDR400
Radeon X1800 PCIe

Now, most of what I was doing went fine. I installed 2 SATA HDD's, and a Soundblaster Audigy2 card. I also played around with the RAM, boosting my machine up to 3GB. I booted the machine up, everything looked good, so I shut down to get the case put back together.

When I tried to put the case back on, I noticed I hadn't seated one of the HDD's all the way down, so I couldn't close the panel all the way. I pushed on it just a bit, it dropped down fine (no extra force needed), and I got the side panel on after that. The one thing I noticed here was that the CPU fan twitched just a bit, which I'm hoping wasn't a sign that I had just inadvertently shocked it.

But after I press the power button... nothing happens. I see the little green motherboard light on, so I know it's getting power. I stripped the system down to just the CPU, CPU Fan, 2GB memory, and put it on an anti-static bag on my kitchen counter to test it by itself. I hooked up power, got the little green light, then used a kitchen knife to short the jumper for the power switch... still nothing. The CPU fan doesn't even come on.

So does anyone else have any tips on something else to try? Otherwise I'm just assuming I shorted out the motherboard somehow and I'm going to have to suck it up and replace it.

Have you reseated the CPU? Also do you have a speaker attached? I can't remember if the A8N has an onboard piezo or not, but with either that or a speaker you should be able to get a POST error code with no RAM attached so that you can simplify things one more level.

A side note, make sure that the CPU fan is connected to the CPU fan header. I know some of the Asus boards default to having a CPU protection on that if there's no fan tach signal to the CPU fan header it'll turn off.

Well, I played around with it again tonight. Reseated the CPU (Opteron 170), tested a second CPU (X2 3800+) that I had sitting around. Pulled the memory, verified the CPU fan was plugged into it's own connector, and still nothing. So, I guess it's pretty straight forward that I need another socket 939 motherboard. I'm thinking about consolidating some of my spare computer supplies... I know that the 3800+ with it's fan will fetch around $50, and I'm sure most of this spare memory I have lying around will go for at least $10 a set or so (I have a few 2x512MB DDR sets I'm not using). I'm just so much of an electronics pack-rat that it's hard to part with working materials.

Edit: I found I can get a WinFast NF4UK8AA-8EKRS for around $36. Seems the biggest loss is SLI, which I don't use... most everything else (barring a few nifty features of the a8n-sli) is comparable. I'll probably order one in the next couple weeks.

Boy, that's frustrating, but at least you blew up the cheapest part.

[slight derail, focus stealing prevention not active!]

Oddly, I'm having an issue with one of these boards as well. As I mentioned in a different thread, a recent power outage (exploding transformers for the win!) has disabled my primary PC. The system in question is based on an ASUS A8N-SLI premium board that apparently has some kind of mental problem now. Booting the PC results in a machine that does display the main BIOS screen, but never completes a POST. I cleared the CMOS, just to see if that would make a difference... and it kinda did. Now I get the graphic splash screen instead of the text bits, but it still doesn't do anything other than inform me that I can hit DEL to enter SETUP. Of course, since it doesn't actually initialize the keyboard ports (PS2 or USB), I can't actually hit DEL.

I'm pretty much resigned to upgrading some hardware, but I'd like to see if there's any way this thing can be salvaged. I have reseated memory, pulled power, pulled the CMOS batter, disconnected all internal / external peripherals, etc.

I haven't removed extra cards in the chassis yet.

Any other suggestions for troubleshooting ideas?

If a PS2 keyboard isn't working, that board's pretty much toast. That's one of the very first things to get initialized. If even that ain't happening, you have a paperweight with fairly complex behaviors.

Malor wrote:

If a PS2 keyboard isn't working, that board's pretty much toast. That's one of the very first things to get initialized. If even that ain't happening, you have a paperweight with fairly complex behaviors.

Yeaaaah, that's pretty much what I had also concluded. Was just curious if anyone else had a trick to suggest. Sadly, it seems I'll have to push forward with an upgrade plan and make do with this laptop for the time being.

Sadly enough I have a A8N-SLI Deluxe sitting here that's also dead (from a system I stripped a while back). Powers on, but no post codes, and nothing shows on the screen. I swear if you sneeze in the direction of one of these boards they fail.

While I was working today I got to thinking about it more, and I believe I know how I killed it... The HDD I was putting in was, I think, touching the case's power button cable when I pushed it down. I probably sent a shock through the chassis of the HDD, which transferred the voltage onto the power button cable, which shorted out the case pins in the rear of the motherboard. It sucks, but at least the 160GB SATA HDD didn't die.

You used an Asus board, there's your problem

I'm not sure what happened to Asus but for the world's largest motherboard manufacturer I do see an awful lot of problems with them.

Stylez wrote:

You used an Asus board, there's your problem

I'm not sure what happened to Asus but for the world's largest motherboard manufacturer I do see an awful lot of problems with them.

They used to make a decent product. On the same token, gigabyte used to make crap. Now everyone seems to recommend them!

Tyrian wrote:

They used to make a decent product. On the same token, gigabyte used to make crap. Now everyone seems to recommend them!

It's computer parts. Everything is completely reborn every 12 months or so. Makes it a challenge to keep up!