Question about Shuttle MK40VN Motherboard

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Mk40vn My board is not recognizing my 80gig hdd. It only can see 30gig. It also cannot see my amd xp 2400. It only can see 1800.

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  • cfuller77 Jul 13, 2008

    I am using windows xp.I is a seagate hdd. I finally got it to recognize the hdd in the bios. It still is showing 30gig in xp. I may have to reload xp unless you have a better solution. It is still just seeing 1800mhz amd cpu in the bios and xp. I installed a 2400 amd xp. The specs say it should accept that. I wonder if I need to flash the bios? My bios is dated 2003. Your help is appreciated! Thanks cfuller77

  • cfuller77 Jul 18, 2008

    Well I got it to see the drive in the bios by changing the jumper on the drive! I also got it to see the cpu by changing a jumper on the board. I tried to run fdisk to format the drive. I did that, now I keep getting this cmos wrong when I boot up. It gives me the option to go to set up or f2 to load default. I tried both and reset cmos and bought new batt. It still will not keep the settings. Do you think it good be the cmos chip? Is there a difference between a cmos or bios chip? Oh I also flashed the bios with a windows utility on the shuttle website. I am running a old 6 gig drive in there now with xp on it. I can get it to boot with my cdrom to load xp on my 80 gig, because it won't save the settings. Too confusing? Help if you can cfuller77 I was told I can buy that cmos chip

  • cfuller77 Jul 18, 2008

    I found an bios upgrade on softpedia. It says 2005 Maybe I should try that first? What do you think? So you think that chip is bad? i will try to contact shuttle. Let me know if you have any more insight. I might do just as well finding a decent board that would fit that cpu. Here in dallas they have a comp. fleamarket twice a month. thanks cfuller77

  • Mike Peluso
    Mike Peluso May 11, 2010

    Are you seeing these from within Windows or while in the bios?

    What operating system are you using?

    What hard drive are you running. Ex: Seagate, Sumsung, WD, Maxtor?


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I did go to Shuttle to look for a bios upgrade & Shuttle does not list any bios files. I found one bios file at Softpedia & downloaded it to see the date. The .rom file is dated 11/28/2003. I gather your 2003 is close.
The current bios does not allow you to clock the CPU to its correct frequency.
AMD XP 2400+ frequency
Bus speed (MHz) = 266
Clock multiplier = 15

You can try turning on the over clocking, see the manual page 57. These setting would be normal for the AMD XP 2400+ CPU.
I'm looking at the max frequency for the Shuttle is topped out at
198MHz. As far as the IDE hard drive I'd like you to download the manufactures bootable floppy software & check the drive with this floppy disk. (Works in a dos like mode). No windows involved. The Mfg's software will test & repair the drive if needed & will also set the drive up, set cluster size, choose NTFS FAT or any other FAT you wish for windows XP. It's better than windows format. You'll fine there are other options you can turn on & off if you wish. (If you run the Mfg's software, disconnect any other hard disk drive by removing the data cable).
On a personal note, I always use the Mfg's bootable software to set up any drive be it IDE or SATA I, SATA II.
Shuttle site's.

Live chat:

Good luck cfuller77!
If you find you need more help, just ask...


Posted on Jul 13, 2008

  • Mike Peluso
    Mike Peluso Jul 13, 2008
  • Mike Peluso
    Mike Peluso Jul 18, 2008

    Hi again cfuller77.

    Go to this link & call or email Shuttle to buy a new bios.

    The term cmos/bios means the same. You can boot to the cd-rom by pressing the F8 key every two seconds. This will bring up windows boot device window. Use the up & down arrow key to high-light the cd-rom drive that you have the Win CD in.

    Since flashing the bios did not help & replacing the bios battery did not help, you're only other option would be to replace the bios chip with a new chip. The manufacture Asus charges $5.00 for a new bios, I would think Shuttle's price would be similar.

    If you call or email Shuttle it would not hurt to explain the issue's you are having with their MK40VN MB. I do not work with many Shuttle boards. I could be missing something here.



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