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Hi the cmos battery on my m450c needs replacing but I do not know how to access it

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Not sure on your model laptop. The battery is usually a 3volt lithium button battery approx the size of a small coin.
The battery could be located on the bottom of the laptop under one of the scewed panels to one side of the opening or it may be under the keyboard.

Posted on May 08, 2009

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Why does sony HDR-SR11 not keep time and date memorized


cmos battery probably needs replacing had it ,and is not holding charge and therefore looses time and date as clock stops when unit switched off.you will need to access cmos battery and actual replace is easy ,though sometimes getting to cmos battery takes a bit of effort and time.

Jul 24, 2014 | Compaq CMOS Battery

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Computers


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First you need to remove the keyboard to gain access to the CMOS battery (Acer call them a RTC battery)
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Tell you what give me a email address and I'll send you the service manual.

Cheers


Jan 08, 2008 | Acer Extensa 503T Notebook

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VAIO TXN19P not keeping time. Maybe Cmos battery??? NOT SURE.


Hi,

All laptops have a cmos battery, it will be on the bottom of the mainboard unfortunately the only way to access it is to strip your notebook and take out the mainboard if you don't know how to I would advise taking this to a computer repair shop.

Mar 23, 2012 | Sony VAIO TXN19P/L PC Notebook

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My hp compaqu nx6110 won't hold time amd date what can i do


replace the battery.. the internal battery is dead not the big battery under the unit but a watch battery installed on the motherboard.. i know what you mean i hate dead cmos battery and messes up windows clock and stuff..

Dec 02, 2010 | HP Compaq nx6110 Notebook

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I need to replace the cmos battery on my dell inspirion 1000. I know where it goes, I just need a replacement. do you happen to know the battery number. Thanks


Hi rsulsr, the #number of the CMOS battery should be written on the top of the battery. Write down the part / model number and you be able to replace it. Thanks for using Fix' Ya. If this helped, please let me know by giving a "Helpful Rating;" thanks again.

Nov 30, 2010 | Dell Inspiron 1000 Notebook

1 Answer

How do I change the CMOS battery of a acer travelmate 4652?


Hello,

On all laptops it is theoretically possible to replace the CMOS battery. To do so you need to strip the entire laptop.

However, your issue seems to be mainboard related as the unit still keep settings when on power or on battery - Thus your mainboard might be damaged, or bugged up.

CMOS battery are standard and you should get them in any electric store that sells watch batteries etc.

May 25, 2010 | Acer TravelMate 4652LMi PC Notebook

1 Answer

Need to unlock bios password on dell laptop, have service tag # and ends in 59b


Hi,

If you have loast the password, to reset the BIOS password you need to remove temporarily the CMOS battery , so to reset BIOS settings.

Some model may be using NV Ram, in that case removing the battery is not enough.

The battery is located on the lower side on the motherboard.

On many DELL models the battery can be accessed from the side of DVD slot, battery slot, or RAM slot, without disassemblying the laptop.

On some model you may need complete disassembly (eg. Dell Le series).

The battery looks like a couple of coin batteries wrapped in plastic.

Before disassemblying or removing covers, always unplug adapter and remove battery.

On Dell Inspiron 8500 the battery can be accessed from a side , after removing the primary battery.

I think Dell 8500 can be set to use NV Ram to store the password.
In this case the problem cannot be solved removing primary battery, then accessing and removing CMOS battery for few minutes.

If you still cannot reset you have two way out.

Disassemble completely and access the NVRAM microswitch, or contact Dell and get master password.

You can also try one of this standard Dell factory CMOS password:

ALFAROME
BIOSTAR
biostar
biosstar
CMOS
cmos
LKWPETER
lkwpeter
setup
SETUP
Syxz
Wodj
Dell






Sep 11, 2009 | Dell Inspiron 8500 Notebook

1 Answer

CMOS battery Gateway 450SX4 notebook


it is in back sdie of alptop.
You have to remove 4 screw on each side of square.
then you find motherbord chipset.
cmos cell is fixed on motherbord circuit.

Jul 16, 2009 | Gateway 450ROG Notebook

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How do I change the CMOS battery on my Fujitsu Siemens Amilo D 7820?


My best suggestion, is to remove the CD Drive, Battery, and Hard Drive. THen undo all of the screws on the back panel. There is no easy access panel to do this, you have to remove the entire back panel. once you have the back cover off, it should be pretty easy to replace the battery.

Feb 05, 2008 | Computers & Internet

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