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How to replace the CMOS battery in an Acer Aspire laptop.

General info
All laptops have a CMOS battery. The main purpose for the CMOS battery is to store the system time, date and BIOS settings even if the computer is turned off or the main battery dies. Individual Acer Aspire laptop models differ somewhat, but the general steps are the same when replacing a dead CMOS battery.

Before you start
1) Read through the owner's manual for your particular Acer Aspire laptop to determine what kind of CMOS battery you need.
2) Purchase the battery through Acer or a local or online computer parts dealer.
3) Turn the laptop off and unplug it. Also unplug any external hard drives, cameras, or other external devices.
4) Turn the laptop over (bottom facing up), then touch something metal to remove static charge.

Removal of the CMOS battery
Remove the Phillips screws that secure the motherboard cover (refer to your owner's manual if necessary), then release the cover from the clips on the bottom of the plastic casing. Lay the cover aside then locate the CMOS battery cable on the right side of the motherboard. Unplug the cable then remove the battery.

The battery should look something like this


Plugging the new battery in
Plug the new CMOS battery cable into the motherboard. Slide the battery partially under the laptop casing (somewhere to hold it in place), then align the cover with the slots on the bottom of the laptop housing. Replace the screws then turn the laptop back over.

Finalizing
1) Turn the laptop on.
2)Enter your BIOS (usually by pressing the "Delete" key) before the operating system loads.
3) Follow the BIOS prompts or refer to your Acer Aspire owner's manual to reset your time, date and desired system settings.

Reason: Anytime the CMOS battery is unplugged for more than a few seconds your BIOS will be reset to the default manufacturer settings. If you make any changes to the BIOS that cause problems with your Acer Aspire, unplug the CMOS battery for 3 to 5 seconds to correct the problem.

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bl51 motherboard


All laptops have a CMOS, or "Complementary Metal Oxide Semiconductor," battery.
The main purpose for the CMOS battery is to keep the system time, date and BIOS settings even if the computer is turned off or the main battery dies.
Individual Acer Aspire laptop models differ somewhat, but the general steps are the same when replacing a dead CMOS battery.Preparation

Read through the owner's manual for your particular Acer Aspire laptop to determine what kind of CMOS battery you need.
Purchase the battery through Acer or a local or online computer parts dealer.
Turn the laptop off and unplug it.
Also unplug any external hard drives, cameras or other external devices.
Turn the laptop over (bottom facing up), then touch something metal to remove static charge.
Removal
Remove the Phillips screws that secure the motherboard cover (refer to your owner's manual if necessary), then release the cover from the clips on the bottom of the plastic casing.
Lay the cover aside, then locate the CMOS battery cable on the right side of the motherboard. Unplug the cable, then remove the battery.
Installation
Plug the new CMOS battery cable into the motherboard.
Slide the battery partially under the laptop casing to hold it in place, then align the cover with the slots on the bottom of the laptop housing.
Replace the screws, then turn the laptop back over.
Settings
Plug the laptop in and turn it on.
Enter your BIOS (usually by pressing "F1," "F2," F10" or the "Delete" key) before the operating system loads.
Follow the BIOS prompts or refer to your Acer Aspire owner's manual to reset your time, date and desired system settings.
BIOS Reset
Any time the CMOS battery is unplugged for more than a few seconds, your BIOS will be reset to the default manufacturer settings.
If you make any changes to the BIOS that cause problems with your Acer Aspire, unplug the CMOS battery for 3-5 seconds to correct the problem.
http://support.acer.com/us/en/default.aspx


Acer aspire laptop battery replacement
http://www.youtube.com/watch?v=mQTZ1AUR0uw

Jul 24, 2013 | Acer Aspire 5100 Notebook

1 Answer

reset password


All mother board has a CMOS, complementary metal oxide semiconductor, battery. The main purpose for the CMOS battery is to store the system time, date and bios settings even if the computer is turned off or the main battery dies.

Turn off the computer (laptop) unplug it. Remove the Phillips screws that secure the motherboard cover then release the cover from the clips on the bottom of the plastic casing. Lay the cover aside then locate the CMOS battery cable on the right side of the motherboard. Unplug the cable then remove the battery. After a few minutes plug the CMOS battery into the motherboard... Replace the screws then turn the computer (laptop) back over. The CMOS battery is unplugged for more than a few minutes your BIOS will be reset to the default manufacturer settings.

Apr 20, 2011 | Computers & Internet

1 Answer

How to chang bios settings password intel Dg43nb board i m loss my bios password


All mother board has a CMOS, complementary metal oxide semiconductor, battery. The main purpose for the CMOS battery is to store the system time, date and bios settings even if the computer is turned off or the main battery dies.
Turn off the computer (laptop) unplug it. Remove the Phillips screws that secure the motherboard cover then release the cover from the clips on the bottom of the plastic casing. Lay the cover aside then locate the CMOS battery cable on the right side of the motherboard. Unplug the cable then remove the battery. After a few minutes plug the CMOS battery into the motherboard... Replace the screws then turn the computer (laptop) back over. The CMOS battery is unplugged for more than a few minutes your BIOS will be reset to the default manufacturer settings. (Password removed) now you can set new password for your bios..

Apr 20, 2011 | Office Equipment & Supplies

2 Answers

how can i remove password from my loptop?


All mother board has a CMOS, complementary metal oxide semiconductor, battery. The main purpose for the CMOS battery is to store the system time, date and bios settings even if the computer is turned off or the main battery dies.

Turn off the computer (laptop) unplug it. Remove the Phillips screws that secure the motherboard cover then release the cover from the clips on the bottom of the plastic casing. Lay the cover aside then locate the CMOS battery cable on the right side of the motherboard. Unplug the cable then remove the battery. After a few minutes plug the CMOS battery into the motherboard... Replace the screws then turn the computer (laptop) back over. The CMOS battery is unplugged for more than a few minutes your BIOS will be reset to the default manufacturer settings. (Password removed)

Apr 18, 2011 | Gateway CX2610 Notebook

2 Answers

can you turn off the password on the motherboard


The best and easiest method: Close OS and shut down the electricity power of computer. Open your computer box (Make sure you have your manual handy), LOCATE THE CMOS BATTERY (it is look like a silver Small coin) take out the CMOS battery from the main board ( note: Before taking out the battery make sure that you already touch metal object to remove static electricity) . Then once you take out that the bios password will be reset to blank. Put it back after a few minutes. Same process as what you did when you take it out. Hope this help. Good Luck

Apr 16, 2011 | Dell (E210882) Motherboard

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