Help! Still can't get ASUS A8N-SLI to POST

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monkeydust

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Jan 7, 2005
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I've been trying to get this system working for over a month now (see original post at http://forums.anandtech.com/messageview...29&threadid=1487882&messageid=17163485 ). I have RMA'd both the motherboard and the CPU and it still won't POST. If I remove the CPU, the voice warns me that no CPU is installed. But, when I turn it on when I think everything is connected ok, everything powers up but I never hear any beeps or get a video signal.

I must not have something hooked up right but I can't imagine what it could be. Below is a picture of how everything is hooked up. Does anything look wrong?

Getting desperate here. :(

http://home.indy.rr.com/monkeydust/images/computer.JPG
 
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FastEddie

Golden Member
Oct 9, 1999
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Disconnect the front panel audio, the front usb, the the rest of the front panel connectors you've got plugged into the board. This may make absolutely no difference, but you want to eliminate everything that might cause a problem. You get it fired up, then connect one device at a time.

Second, the 2 x BFG GeForce 6800 GT OC PCI-Express are beasts. You already know what I'm going to tell you. You're using a dual rail psu right? You might get off the ground with just one of those cards.....might. ;)
 
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hwan

Member
Oct 13, 2004
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Just some wild guesses here:

- Is the SLI card all the way in?
- Have you booting up with just 1 video card + hard drive and nothing else?
- Make sure all jumpers are set correctly.
- Try a different powersupply?
 
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monkeydust

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Jan 7, 2005
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Yeah, tried all those things. They are mentioned in the thread I cited in my first post. I have the thing assembled outisde the case right now with one videocard. I have nothing plugged in but the power, speaker, CPU, one stick of RAM and one videocard.

I turn it on and everything powers up but no beep or warning. I don't even get a warning that there is no RAM when I remove all of it. I only get a warning when I remove the CPU.

This is the second mobo and CPU so it has to be something I am doing wrong.

Current pic... (I only have it on for a few seconds so I dont get the CPU time to heat up that much - it doesn't make a difference if I have the CPU fan running - it is plugged into right connector on mobo too)

http://home.indy.rr.com/monkeydust/images/comp.jpg
 
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imported_slippy

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Jan 7, 2005
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I was recently in a discussion with a person who had a lot of the same problem... check out tazzer in the search. He actually found out that somehow his videocards were bad. I am betting that might be what your problem is too.
 
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monkeydust

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Jan 7, 2005
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I read that thread. It would unlikely be my problem since I have tried both videocards (both at once, or one at a time) and I can't even get it to POST or get any sort of beeps/warnings out of the system (apart from no CPU when I yank that).
 
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hwan

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Oct 13, 2004
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Just for kicks, have you tried the RAM stick in the other blue slot? It's B1 I believe.
 
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hwan

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Oct 13, 2004
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Is your PSU switched to 110V? As you can see, I'm running outta ideas here :D
 
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monkeydust

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Jan 7, 2005
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Yeah, I'm out of ideas too. Yes it is on 110V. I also tried a differnt PSU.

At this point, I'm thinking of looking in the phone book for some computer place to take it where the can figure out what is wrong.

I have been building systems for years and have never had these kind of issues.

Or... maybe I should just give up on the ASUS and order a DFI SLI mobo.
 
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hwan

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Oct 13, 2004
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Did you change any of the jumpers around when you installed? Is the green light on the board on?
 
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monkeydust

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Jan 7, 2005
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No, I never changed the jumpers on this mobo or my first one. Yes, the green LED is on (and on my videocards).
 
Mem

Mem

Lifer
Apr 23, 2000
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Have you tried booting the board outside of the case?....Could be grounding problem?
 
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hwan

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Oct 13, 2004
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I can't think of anything else except make sure the power and speaker cables are plugged in correctly, maybe try plugging the cables in the other way around. Good luck!
 
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FastEddie

Golden Member
Oct 9, 1999
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Can you get your hands on a PCI video card, to see if the system will boot? TaZZer had the same problem with the cards not powering. It had nothing to do with the motherboard, but rather the cards.
 
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monkeydust

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Jan 7, 2005
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The mobo is currently outside of the case. I have also tried a PCI card and have the same results.

I have rehooked everything up several times to make sure everything was seated properly.
 
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FastEddie

Golden Member
Oct 9, 1999
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Originally posted by: monkeydust
The mobo is currently outside of the case. I have also tried a PCI card and have the same results.

I have rehooked everything up several times to make sure everything was seated properly.
Click to expand...

Hold on a minute here. Do you have a straight crt monitor to try? Take the LCD out of the loop until you get the os installed. Any monitor.

 
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FastEddie

Golden Member
Oct 9, 1999
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Absent having another monitor, you can try the Dell using an analog D-Sub connection. NOT the DVI connection. The resolution at dos boot is too low for the monitor to pick up and display, therefore no image. I would get everything installed with a plain crt monitor, then swap to the dell. ;)

Edit: Digital Video Format: DVI-D TMDS can't display 16 colors.
 
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monkeydust

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Jan 7, 2005
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I've been using my old CRT monitor only via the DVI-to-LCD connector (dual-dvi cards). I havent tried hooking it up to my Dell LCD.

But, shouldn't I at least get a single beep POST when I turn it on regardless of whether a monitor is connected or not?
 
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FastEddie

Golden Member
Oct 9, 1999
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No, the single beep is the video sink when booting. Your cards have dual DVI output correct? Is one primary over the other? Use a DVI to Analog converter and use a crt monitor to get your system up and running.
 
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FastEddie

Golden Member
Oct 9, 1999
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I just looked up your cards. No these are dual dvi output. Use the dvi to analog connector with a crt monitor to see if you get video sync.
 
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monkeydust

Member
Jan 7, 2005
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Just tried my LCD too, no difference.

Yeah, I have been uisng the dvi-to-analog connector to test with my CRT. Don't worry, I haven't been trying to shove my analog cable into my DVI port. ;)
 
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