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CMOS battery failed - how to replace it?

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I have a 3 year old Inspiron 531S. Yesterday my computer installed an update to Vista and was supposed to shut down afterwards, but it never turned off. I had to unplug it and when it tried to reboot it failed. The message said "diskette drive 0 failure. CMOS battery failed". From that I was able to figure out that I need to replace the battery on the motherboard. 

 

What I need to know is: What type of Battery do I need? (CR 2032?) Do I need to get any information from System Setup before I proceed, and if so what do I need to do to get it? Is there a way to get rid of that diskette drive failure alert, since I have no floppy disk drive? 

 

Thanks for any help you can give me. I'm afraid to embark on this before I have the proper info, but also afraid to leave it undone and run into worse problems down the road. 

Verified Answer
  • It's a CR 2032. You can buy a pack of two at wal-mart for 3 bucks:) It's the same battery they use in many of the passes for toll booths.

     

    http://www.walmart.com/ip/Energizer-2032-3V-Lithium-Batteries-2-Pk./15988109

    __________________________________________________________________________________________

    Area-51 Cosmic Black/Windows 8 64-bit Pro/BIOS A11
    Intel Core i7-980x Extreme Edition @ 4.0 ghz/Intel 160gb X-25M SSD Raid-0
    6GB Corsair Dominator GT 1866 DDR3/PNY GeForce GTX 680 SLI/ATI TV Wonder

     

  • It's a CR-2032 battery.  Unplug the system, replace the battery and when you next power up, go into BIOS setup (F2) and turn off the floppy drive setting.  Verify that the hard drive is set in the boot list and save.


  • DL2032 or CR2032

    Long-life Lithium Button Cell Batterieshttp://ecx.images-amazon.com/images/I/31AlERovjBL._SL500_AA300_.jpg

     

    Appendix - Documentation

    Removing and Installing Parts

    Battery

    Battery

    Replacing the Battery

     CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
     NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.

    A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years. If you have to repeatedly reset time and date information after turning on the computer, replace the battery.

     CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

    To replace the battery:

    1. Record all the screens in system setup (see System Setup) so that you can restore the correct settings in step 9.

    2. Follow the procedures in Before You Begin.

    3. Remove the computer cover (see Removing the Computer Cover).

    4. Locate the battery socket (see System Board Components).

    5. Carefully press the battery release lever away from the battery and the battery will pop out.

    6. Insert the new battery into the socket with the side labeled "+" facing up, then snap the battery into place.

     

     

     

    1

    battery release lever

    2

    battery (positive side)

     

    1. Replace the computer cover (see Replacing the Computer Cover).

     NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer.
    1. Connect your computer and devices to electrical outlets, and then turn them on.

    2. Enter system setup (see System Setup) and restore the settings you recorded in step 1. Then go to the Maintenance section and clear the low battery and other errors associated with the battery replacement in the Event Log.

    3. Properly dispose of the old battery.

    See the Product Information Guide for battery disposal information.


     


    Report Unresolved Customer Service Issues here
    I do not work for Dell. I too am a user.
    The forum is primarily user to user, with Dell employees moderating.

All Replies
  • It's a CR 2032. You can buy a pack of two at wal-mart for 3 bucks:) It's the same battery they use in many of the passes for toll booths.

     

    http://www.walmart.com/ip/Energizer-2032-3V-Lithium-Batteries-2-Pk./15988109

    __________________________________________________________________________________________

    Area-51 Cosmic Black/Windows 8 64-bit Pro/BIOS A11
    Intel Core i7-980x Extreme Edition @ 4.0 ghz/Intel 160gb X-25M SSD Raid-0
    6GB Corsair Dominator GT 1866 DDR3/PNY GeForce GTX 680 SLI/ATI TV Wonder

     

  • It's a CR-2032 battery.  Unplug the system, replace the battery and when you next power up, go into BIOS setup (F2) and turn off the floppy drive setting.  Verify that the hard drive is set in the boot list and save.


  • DL2032 or CR2032

    Long-life Lithium Button Cell Batterieshttp://ecx.images-amazon.com/images/I/31AlERovjBL._SL500_AA300_.jpg

     

    Appendix - Documentation

    Removing and Installing Parts

    Battery

    Battery

    Replacing the Battery

     CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
     NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer chassis.

    A coin-cell battery maintains computer configuration, date, and time information. The battery can last several years. If you have to repeatedly reset time and date information after turning on the computer, replace the battery.

     CAUTION: A new battery can explode if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.

    To replace the battery:

    1. Record all the screens in system setup (see System Setup) so that you can restore the correct settings in step 9.

    2. Follow the procedures in Before You Begin.

    3. Remove the computer cover (see Removing the Computer Cover).

    4. Locate the battery socket (see System Board Components).

    5. Carefully press the battery release lever away from the battery and the battery will pop out.

    6. Insert the new battery into the socket with the side labeled "+" facing up, then snap the battery into place.

     

     

     

    1

    battery release lever

    2

    battery (positive side)

     

    1. Replace the computer cover (see Replacing the Computer Cover).

     NOTICE: To connect a network cable, first plug the cable into the network device and then plug it into the computer.
    1. Connect your computer and devices to electrical outlets, and then turn them on.

    2. Enter system setup (see System Setup) and restore the settings you recorded in step 1. Then go to the Maintenance section and clear the low battery and other errors associated with the battery replacement in the Event Log.

    3. Properly dispose of the old battery.

    See the Product Information Guide for battery disposal information.


     


    Report Unresolved Customer Service Issues here
    I do not work for Dell. I too am a user.
    The forum is primarily user to user, with Dell employees moderating.

  • Thanks to everyone for your help. I'm always so leery about doing any repairs on my computer, even minor ones, that I run for help. By coincidence I have a spare battery on hand from a pack I bought for another device, so I'm good to go.