Asus m2n32-sli deluxe CMOS checksum error

Discussion in 'Motherboards' started by rand4505, Aug 9, 2008.

  1. rand4505

    rand4505 Limp Gawd

    Oct 25, 2007
    Ok, well let me bring you up to speed. I have been having POST issues for a couple of weeks now.

    About half a year ago, my computer failed to bootup. Or it failed to post, I thought my hard drive had crapped out so well, I put my comp to the side for a good while.

    But until about 3 weeks ago I decided to order a new SATA hard drive, a new graphics card (EVGA 8800GT) and vista 64bit home premium.

    I installed all the parts, booted up just fine and started installing vista. Everything went smoothly, I loaded up drivers, but DID NOT update BIOS. I shut the computer off and couldn't get it to restart. It was failing to POST bios.

    Well, the absolute only way I could get it back on was to kill the connection of power to the mobo, pull out the CMOS and put it back in. Only way I can get my comp to successfully post.

    When it post, it comes up CMOS Checksum error - Defaults loaded.

    So when the defaults are loaded, I can bootup.

    I have to do this CMOS reset EVERYTIME i want to get my computer to start up... When I do this I only get 1 trip through POST. Once I get through everything works great, I can play game etc or even post threads like this one!

    I can't go into BIOS to change settings and save them, because well the computer restarts. Then it fails POST.

    I have replaced the CMOS battery, I have replaced my old PSU with a Corsair HX520W. I have replaced my RAM with Corsair 2 x 4g DDR2 800mhz. I have a brand new graphics... The only things I haven't replaced are the CPU (amd athlon fx-64) and mobo (m2n32-sli deluxe).

    I have tried updating the BIOS using a bootable flash drive, with the phoenix award bios updater. I have tried the BIOS 2001, and 1903. No luck.

    I appreciate any help!

  2. burro

    burro [H]Lite

    Aug 24, 2007
    Not sure if I can help at all, but the ASUS support was very good to me when I called them bunches of times for very, very similar problems.

    I've seen many instances of certain RAM causing problems with this motherboard. I remember people also posting that certain processors had trouble in some instances. My problem was that my video card slot was malfunctioning after my old-ish ATi card cooked it quite a bit. They sent me a new one and I was good to go. I'm eager to get rid of my mobo personally, because when it busted I was reading what the problem could be online and there were countless cases of weird things happening with nearly every component on a PC!

    Good luck fixing it!