Question about Abit AN7 Motherboard

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Abit AN7 motherboard does not boot - POST code AF

I was installing a new hard disk in a friend's Abit AN7 motherboard, and all was going well until I had almost finished. Suddenly it would not boot, and gave an undocumented POST code of AF. I tried the usual reset CMOS/unplug power to motherboard/remove motherboard button cell - all to no avail. I have switched graphics card, motherboard and CPU, disk drive, and still nothing changes - still AF! The only constants were the case, CD drive, FDD, PSU and 256k memory.

What's happening? What should I do - apart from simply buying another/more recent cheap Pentium 4 system unit?

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  • John Bevan May 10, 2009

    I tried this, twice, in another memory slot.  Maybe I've damaged the memory card, so I'll look for another, insert it, and disconnect everything I do not need for a re-boot (FDD, CD drive, ..).


    Are you pretty sure that POST=AF means a memory problem?

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I think thats memory so try removing your ram and re installing it. maby its not pushed in all the way.

Posted on May 09, 2009

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I think is a bios problem, a ram failiure would be C1 post code.If the bios is corrupted, try a blind bios update or if it doesn't want to, you must do a hot flash update.For more details google search for award bios hot flash.Or dump it and buy a new one.Usually when the post doesn't change at all or if it stops to 90 is a bios problem.I had a similar problem, mine hang at 90-after a complete check of uguru.In your case might also be the uguru chip.I hot flashed the bios.I used an abit nf7s 2.0 to start and then put in my bios.It worked and i also made a backup.Your chip is Winbond-4 mb capacity.

Posted on Jul 11, 2009

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Good suggestions people. Memory stick fault... removed one, puter worked fine
last time it did this, memory stick AND bios issue from failed power supply

Posted on Nov 26, 2010

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http://www.nodevice.com/driver/download.html

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