Replaced CMOS battery in N4010 & got same ERROR 0271 msg

September 7, 2014 at 10:57:02
Specs: Windows 7
OK, I have an Inspiron N4010 and had the "ERROR 0271"dead CMOS battery problem. I found an on-line battery recommended as a CR2025 so I bought one of those & took the laptop apart to get to the CMOS battery which I saw was actually a CR2032. From what I read, the CR2032 is just a bit thicker (3.2mm vs. 2.5mm for the CR2025) and with a slightly longer life ... but the CR2015 did fit into the slot provided & the little spring in there seems to take up the extra space. Anyway, I replaced the battery w/ the new CR2025, put things back together again ... and the same dang "ERROR 0271: System CMOS checksum bad - Default configuration used" message came up. I wasn't shocked as I figured that the clock would just need to be re-set 1 more time so I did that. Then I restarted it & the same "ERROR 0271: System CMOS ..." message came up again!! What's next ... do I really need to get a CR2032 & go back in & replace the CR2025 or ???? I really don't think the CR2025 is the problem. Is there something else I need to re-set?

See More: Replaced CMOS battery in N4010 & got same ERROR 0271 msg

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September 7, 2014 at 11:02:18
For a start I would get the correct battery. The extra thickness could mean the battery is not making proper contact


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September 7, 2014 at 15:14:00
The 2025 has a 160 mAh rating while the 2032 is rated at 220 mAh. Both are 3 volt but the 2032 has more oomph to it. Usually that just means it'll last longer.

After putting in the new one did you go into bios setup and set the date? Sometimes when the date is at bios default it assumes the battery is bad and gives that message.

It's also possible the battery socket is bad or as Stuart mentioned, it may not be fitting right or the socket may have broken solder joints on the motherboard.

But yeah go ahead and replace it with the 2032. It'll last longer so it'll be longer before you have to go digging around inside the laptop to replace it again.

Edit Oh, let me ask, how easy was it to get to that battery? A relative has an N4010 that's losing time and will need the battery replaced.

Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide. Better hurry. They're picking and shipping now.

message edited by DAVEINCAPS

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September 7, 2014 at 19:02:09
Got a Dollar Tree near you? They have the CR2032 for $1.

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Related Solutions

September 7, 2014 at 21:38:24
Was the time still correct after replacing the battery and setting "time&date" in BIOS and the (many) reboots?

Perhaps setting the BIOS to it's default or factory settings may correct the errors you get.

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