Ack! Help!

Make sure the FSB is running at 133MHz and not 100. Check and see if there is a jumper to change this, if not, do it in the Bios (I don't have an A7N8X so that's all I can tell you).

there is a jumper on the board. one position is for 100mhz fsb the other is for 133/166mhz fsb. it comes set to 100 as default. just flick that jumper over and you will be good to go

I'm out of my mind, but feel free to leave a message.

Ok guys, thanks for the help! I'm up to speed now!

I checked the mobo FSB jumper and it was set to 333/266 already, so the problem ended up being the FSB setting in the BIOS was 100 MHz and I just needed to bump it up.

Stuff you read about all the time and end up feeling stupid for not recognizing earlier!  

Thanks again, folks.

And you wouldnt believe how often this particular problem comes up for first time AMD users :smile:

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Definitely shows up for Intel users as well.  
Me a proud AMD user though.  

Hardly ever for P4 users... the P4 has FSB detect pins to automatically set the right FSB speed.

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Plus most P4 owners bought a complete OEM-configured system from Dell, Gateway, HP, etc. ad nausium and thus don't even have to worry about it because someone else already set it up correctly for them.

(Which is a good thing since they wouldn't even know what a FSB was if it bit them on the arse.)

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LOL, I wonder if any Intel fans will bite at the bait.

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This is the problem I'm thinking. It seems that this problem is happening on Asus A7N8X. And I feel strange that since nForce2 mobo is mostly for at least 266FSB CPU. (IMHO, putting a Duron or Thunderbird on nForce2 is a waste of resource), why Asus set the default FSB value at 100MHz? I believe they are trying to 'protect' the CPU if someone really pop a 100MHz CPU onto the mobo. And I believe this is well stated in the manual, so I figure out that most people having trouble didn't read the manual carefully. So they are making AMD CPU looks like a "problematic" CPU which always run underclocked.

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