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MISSING CMOS BATTERY

By james.hinchcliffe ·
I have run my Dell Inpsiron 4000 Notebook on mains power for years with no problems. Suddenly, when I go to turn it on everything has re-set like the CMOS battery has failed. I downloaded instructions from Dell to replace the battery and it showed that theere is a compartment under the laptop. When I opened it, there is not battery to replace?

Where is it???

James

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re: Inspiron CMOS battery

by ThumbsUp2 In reply to MISSING CMOS BATTERY

There is a difference between the laptop battery and the CMOS battery. CMOS is inside ON the motherboard. It looks similar to a watch battery (small round silver thing). You would have to remove the keyboard and cover to expose the guts of the computer to get to it. And, if you don't know what you're doing or don't have the correct tools to open a laptop, you can distroy the computer to the point where you can never use it again by not opening it correctly. So be very careful.

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Inspiron CMOS battery

by james.hinchcliffe In reply to re: Inspiron CMOS battery

The Laptop battery, slots into the base of the laptop has been removed and replaced with a blanking piece for years. I have run solely off main power. The compartment for the cmos battery is under the machine, but it is empty???

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Missing CMOS Battery

by james.hinchcliffe In reply to re: Inspiron CMOS battery

Isn't this the CMOS battery?

http://www.ebatts.com/dell_inspiron-4000_laptop_accessories.aspx

scroll to bottom of page.

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Looks like same one here

by ThumbsUp2 In reply to Missing CMOS Battery

That looks like the same one found here, which is the instructions from Dell on how to replace it. Maybe it's under the cover that you need to remove?

http://support.dell.com/support/edocs/systems/ph2o/remove.htm#999641

By the way, it appears the space was empty when it left the factory and putting one in may not solve your problem. Read the following forum posts at Dell.com. You may need to copy this whole URL to Notepad and put it back together again before copy/paste into your browser. It's a long URL.

http://www.dellcommunity.com/supportforums/board/message?board.id=insp_general&message.id=175519&c=us&l=en&cs=&s=gen

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Looks like same one here

by james.hinchcliffe In reply to Looks like same one here

That's the problem, when you remove the cover there is not battyer to replace, just a space and the connector!!!

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re: Looks like same one here

by ThumbsUp2 In reply to Looks like same one here

I just edited my post above to add the Dell.com forum post where I found the solution. It appears the space was empty when it left the factory, by design. Reread above post. You need to replace main battery.

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Looks like same one here

by james.hinchcliffe In reply to re: Looks like same one h ...

How Bizarre!!!!

Thanks for all your help

James

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re: Bizarre!!!!

by ThumbsUp2 In reply to Looks like same one here

Yep, it's by design. CMOS battery, even replaced battery, won't charge without good main battery. Guess it does not charge CMOS from AC power.

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8 total posts (Page 1 of 1)  

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