Having problems with your Acer TravelMate 2300 Notebook ?

How do I replace a dead cmos on acer 4520LCi travelmate laptop? The laptop no longer keeps track of system time when shut off completely. Can you tell me the exact location of the cmos so I can be able to replace it? Thanks.


Answers :

Hi,

what you replace is not the CMOS, but the CMOS battery.

On an ACER from those years the CMOS battery looks like a coin, or a coin wrapped in plastic and connected to the motherboard.

On most models from same series the battery is located on the lower side of the motherboard, like on picture below:

83493ee.jpg

On some model the battery may be located underneath the keyboard.

Here disassembly instructions for a similar model.
Try first to replace a CMOS battery. Normally, the CMOS do not track time when the battery is empty. And You can power on Your computer, that means CMOS is working properly and there is no reason to change it. The battery is a small piece that is placed on main board. is only one battery, looks as a slim battery for some electronic devices such a remote controllers, watches etc, so You can locate it easily. Pull off gently the old battery and replace it with the new one. You´ll see - everything will be fine and Your laptop will be an working order. I repeat, it's a common problem of the all kinds of computers, don't worry about CMOS. After the replacement probably You must to change a little bit BIOS settings, but normally the BIOS don't needs changing if You don't change it before.\015\012Sincerely.
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