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Abit KV8-MAX3 Code 7f hang - BIOS - CMOS?


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#1 glocksig

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Posted 12 March 2009 - 04:54 PM

Hoping someone can help. I've got a KV8-MAX3, it had been hanging intermittently and finally wouldn't boot the other day. I popped open the case and found that the Northbridge fan had burnt out. I replaced the fan and am still having the same issue. The computer comes on, displays the Abit splash screen and just sits there. The board displays code 52 which I believe is a memory check. After close to five minutes it proceeds to a 7F and displays a screen that says CMOS checksum error, defaults loaded. Asks you to push F1 or delete. The system doesn't repsond to any key presses. I have tried clearing the cmos, replacing the battery and pulling memory modules. I'm out of ideas here!

Thanks in advance!

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#2 the_patriot11

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Posted 12 March 2009 - 05:38 PM

Its possible the motherboard is bad, when the fan burnt out it could have caused damage to the northbridge. have you tried a different motherboard? and if that is a memory code, have you tried moving the memory modules around?

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#3 glocksig

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Posted 12 March 2009 - 06:15 PM

Yeah I swapped the modules, no good. The 7f code doesn't help much it basically refers to the display mode of the splash. I don't have a board to swap out but if the consensus is a bad board I'll probably just buy a new system all together. I was leaning toward a blown chipset chip but I've read articles that quite a few people run no fan at all on them so I didn't consider it burnt from the beginning.

#4 fairjoeblue

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Posted 12 March 2009 - 06:49 PM

I agree it sounds like the Nortbridge chipset has been damaged.

Not all require a fan.
Some have a lage enough heatsink to be passively [no fan] cooled.
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#5 glocksig

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Posted 12 March 2009 - 07:26 PM

I can't replace the northbirdige correct?

#6 fairjoeblue

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Posted 12 March 2009 - 07:29 PM

Unfortunatly motherboard chipsets aren't replaceable or otherwise repairable.
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#7 glocksig

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Posted 12 March 2009 - 08:04 PM

I've currently got the OS across two sata drives in a raid 0, what's the chance of swaping in the new board without losing my os?

#8 fairjoeblue

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Posted 12 March 2009 - 09:13 PM

Very VERY slim unless it's the exact same motherboard .
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#9 the_patriot11

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Posted 12 March 2009 - 11:28 PM

they are maybe replaceable if you have the exact same chipset and know how to do soldering but I wouldnt mess with it. not all northbridges need a fan, in fact none of the ones in my builds do, one I built for my dad has the option to, and would need one if he were to overclock, but he doesnt so the fans not needed. it runs pretty hot but not damagingly hot. I would consider a new motherboard before replacing the chipset, that can be a long and difficult process, and the amount of money spent would be equal to or greater a new board.

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Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit. 

Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.

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#10 glocksig

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Posted 13 March 2009 - 06:17 PM

Figured it out, turns out my ipod nano was intrerfering with the boot process. thought I had disconnected everything but what I thought was the mouse was my USB hub..god bless apple.

#11 Sterling14

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Posted 13 March 2009 - 06:53 PM

Your boot order may be set to boot off a usb device before the hard drive. If you go into the BIOS, you should be able to change the boot sequence.
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