Question about ASUS M2N-MX Motherboard

4 Answers

Cmos checksum bad...usb current status detected system shut down 15 sec

Hello im building my first pc and have done it by the book so far. when i turn the power on i get this command and then the computer shuts off
cmos checksum bad
usb device current
status detected system will shut down in 15 seconds.
then it does what it says/ im lost and im in great need of help will be very thanful to anyone who can help.

asus p5ld2 se......


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  • 3 more comments 
  • Geoff Plumb
    Geoff Plumb May 13, 2008

    My pc,s exactly the same

  • Anonymous Jun 03, 2008

    • USB Device over current status detected system shut down 15 sec problem, and notify you when a new

  • Doctor Ross Oct 30, 2008

    I have the usb over current status message. I have cleared the cmos, checked the jumpers, pulled the mobo and tried to run it on cardboard to see if it was a grounding problem. I'm stuck. This is a new build and my fourth. Any suggestions?

    specifics... asus p5n-d board

    q6600 cpu

    gts8800 gpu

    ocz ddr2 dualchannel 800 ram

  • sassabrassa Dec 29, 2008

    Exactly the same problem:
    cmos checksum bad
    usb device current
    status detected system will shut down in 15 seconds.

    All new components putt together for the first time.

  • manomk2006 Mar 08, 2009

    usb device over current status detected error


4 Answers

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Situation Remedies If you have encountered this error and would like to fix your computer, here are some remedies for each situation:
CMOS Battery Not Functioning Properly: If you suspect your CMOS battery is not functioning properly you can easily change it. Before changing your battery, reboot your computer to make sure that the error still exists. If it does, go into your CMOS and write down all of the settings. If all settings are lost, you can usually get them from your computer manufacturer. Now locate the battery and remove it, you might need to consult your computers manual or tech support to remove your battery. Take down the CMOS batteries information such as volt, size, etc. Once you have your new battery, you can replace it and reenter your CMOS settings. If your battery was the cause of the CMOS Checksum Bad Error, you should have remedied the problem.
Your BIOS has Been Updated (either by you or possibly a virus): If your BIOS has been updated recently, your CMOS settings may have become reset. Make sure that the values entered in the BIOS are correct or simply reset them to the default settings. If you believe that a virus updated your BIOS settings, run a virus scan and make sure that the BIOS settings are back to the default.
The Computer Was Shut Down Improperly: Sometimes when running MS Windows, if you shut down your laptop or desktop without first properly shutting down your operating system it will corrupt the CMOS settings causing the CMOS Checksum Bad Error. You can easily avoid this error by making sure that you completely shut down your computer before turning off the power. Usually this entails going into the Start Menu/ Turn Off Computer/ Shut Down. If you received the error, shut down the computer properly, if this is the cause of the error, the error message will not return.

Posted on May 11, 2008

  • Mountaine70 Sep 14, 2010

    I Update the Bios myself because it was the first version with 3 years old, but when the system reboot the message "Cmos checksum bad" appeared, so I downgrade the Bios version 1 time, and again the same message, downgrade twice and the same, then I reset the Bios to the default settings and it worked.
    Thank you very much.


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Fixed - there was two jumpers on different places on the motherboard, that selects if USB items can wake the computers sleep mode. One of those jumpers was missing.

Posted on Dec 30, 2008

ITs the motherboard battery!

Posted on Aug 01, 2008

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I have problem with it

Posted on Oct 29, 2008

1 Suggested Answer

SOURCE: cmos checksum bad...usb current status detected system shut down 15 sec

It is in your bios this motherboard has been known to have isues with the bios chip.I am useing this motherboard and have been lucky I did not get this problem you are haveing.You may try flashing to the curent bios 1903 geting the download from the Asus site.

Then remove file
Rename file to P5LD2.rom
Put renamed file only on three and a half floppy disk
Reboot Holding alt F2 at same time
flash will start

If you do not feel safe doing this then you can get a new bios chip from asus with the 1903

Good Luck
Also make sure you have no air gaps on your heatsink to proc this will cause the pc to heat up and shut down.

Posted on Mar 05, 2008

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dead battery a new cmos battery for £2 ..make sure you install correct way up...

from any pc shop or ebay...

you will have to reset date /time in bios afterwards...f2 or delete usually to enter bios settings..
regards tonster

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