Laptops forum


Thinkpad A30 thinks it's running on battery

by matthiashess / July 23, 2013 11:29 AM PDT

The other day I turned on my computer (after it had been off for about a week) and it would not boot up--I received a "critical low battery" error. The thing is, there was no battery in the machine. I popped in a long-expired battery to see what would happen and the computer would not even turn on.

I have ruled out the A/C adapter--I have another laptop of the same model which boots up just fine with either adapter, but this one will not boot with either.

I finally got the machine to boot up by popping in the battery at a strategic moment just before the error appears. It works fine as long as I leave it running, but Windows thinks that it is running from the battery ("Current Power Source: Batteries - Total Battery Power Remaining: Unknown") and the computer dies instantly if I remove the battery.

I have tried uninstalling and reinstalling the battery in Device Manager to no avail. Is there anything else I can do, or do I need to make the backup laptop my primary?

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Clarification Request
Is this a Windows Only issue?
by R. Proffitt Forum moderator / July 24, 2013 12:57 AM PDT

If so I think the OS has become damaged. It's quite odd to not have a battery installed so there may be more to this story such as a laptop that is missing the battery or it's old and failed in some way.

I have found zero support for trying to work around a failed battery or failed laptop.

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It's more of a boot-up issue
by matthiashess / July 28, 2013 10:45 AM PDT

I booted up my Linux partition (I have no trouble restarting the computer, but as soon as I put it to sleep or power off, to get it going I have to pop the battery out and in after the F1 prompt but before the error message) and checked the power settings. Linux reports that the battery is present and fully charged (with zero energy--the battery is old) and also recognizes the AC adapter, but I'm not sure which one it thinks is the current power source.

Could it be a BIOS issue?

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It could
by R. Proffitt Forum moderator / July 29, 2013 2:12 AM PDT

And if I suspect that I do 2 things. Reset the bios to its default and retest. If that fails I look at the maker's site for a new version.

However, if the machine is over 2 years old it's a common failure and we end up replacing the mainboard.

But one last test. Rather that pull the battery, press and hold the power button for a full 60 seconds then try to power up. It's a test.

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No luck
by matthiashess / February 1, 2014 9:17 AM PST
In reply to: It could

Bios settings did not help, nor did holding the power button. I finally swapped hard drives and now use the other one as my primary machine.

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Late reply but
by R. Proffitt Forum moderator / February 1, 2014 11:33 PM PST
In reply to: No luck

If swapping drives helped then is there more to this story such as someone installing an OS or cleaning the OS?

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