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System battery voltage is low

My main computer at home (a Dell with Windows) was complaining at startup about System battery voltage is low and then I had to press F1 to continue. After pressing F1, it always worked fine. Lazy as I am, I let this go on for months without buying a new battery (which doesn't cost much).

Then one day I think the voltage became too low and I guess the bios settings got errased. The problem was that after running the setup and starting Windows, I now got a blue screen of death with the UNMOUNTABLE_BOOT_VOLUME error.

The problem was that my internet connection went through a modem connected to that computer and didn't work on Linux (at least not out of the box), so I couldn't even solve it with a Google search.

First of all, I went to the repair shop for watches, which is pretty close (my watch needed a new bracelet too) and got a new battery. The battery was easily replaced on the motherboard. It looks like a coin and is easily removed in a few seconds. The same for putting it back.

Of course the battery only solved the low voltage problem and I still got the UNMOUNTABLE_BOOT_VOLUME error.

I tried it with a few Linux cd's (Mandriva and Ubuntu) and those could see the files and partition just fine. I backed up some files I would like to keep and already planned to install Windows again.

Then I tried with the Windows cd to reinstall Windows. During the install I noticed that it detected the current partition as broken/damaged. I figured out that I could maybe repair the partition to make it work again.

So I plugged in my Gparted Live CD and booted from it. I tried to resize the partition by removing a few Megabytes from it. Unfortunately it somehow figured out it should move the whole partition a few MB further (which takes very long) instead of removing some from the end. I aborted the thing and it luckily hadn't touched anything yet. I tried again and this time it actually did what I wanted it to do, I mean removing a few MB from the end.

Anyway, after resizing it, I rebooted again into Windows. It started without the blue screen and fixed some files with the disk recovery util (or whatever it's called) and then it ran completely fine. The issue was fixed thanks to Linux. Very Happy

Now that I have access to the internet, I found out the correct command to do it with Windows from the Windows CD: at the command prompt from the recovery console you need to type chkdsk /r.;en-us;297185

26 blog comments below

That's really funny. Sometimes due to a small error devastating problems arise. Thanks god you found the solution though troubled for some days. I will never neglet now onward on batteries. Better change them earlier than to face such trouble.

Thanks for posting your experience.
shkhanal on Wed Jun 18, 2008 11:04 am
Well, I think your lucky about that.
'Cause the last time the battery of one of my computers went low it didn't warn me. So, one day I've tried to get the PC On and got a bluescreen of death. As I didn't know what to do I bought a new motherboard (as I didn't made the link between the blue screen and the battery). Few weeks later my friend said to me you only had to change the little battery inside... And we've tried another battery on the old motherboard and it did work fine.
Lol it was too late to return the new Mobo so... I kept it.
pll on Wed Jun 18, 2008 11:27 pm
Luckily I dind't have a battery problem yet, nice that you posted your experience, I sure will remember it in case I get the same problem.
dawidplet on Sun Jul 13, 2008 12:16 am
Nice information to share
thanks alot
EshaAngel on Thu Aug 21, 2008 12:09 pm
Shocked I once had a similarly frustrating problem with a computer. I was able to boot up my PC but after about 30 sec to a min it would shut down. I'd reboot and same thing would happen. Pulled my hair out trying to figure out what was going on. I thought it was a bios problem. Well after about two hours on the phone with customer service, The CS rep asked me to open up the box and take a look at the motherboard. Turns out one of the capacitors on the board had popped (capacitor is basically a battery). Bad news was I had to wait 3-5 days for the new board to arrive but all turned out well in the end. Laughing
cueball on Sun Sep 07, 2008 8:29 am
Good to know that a capacitor is a battery!! It's a condensator that stores electric energy in a pasive way. Now going back to the battery change, I have lot's of computers that I never ever changed the battery and still work perfect! Just use them with a UPS and they will work much better and protected!
maquinas on Wed Oct 22, 2008 2:19 am
did you guys no they made portable electricity!

it true chek it out!
AMANITECH on Sun Oct 26, 2008 7:22 am
Honestly, get a mac Smile
radmody on Fri Dec 26, 2008 2:26 am
[FuN]goku also had a similar problem, he received an Unmountable_Boot_Volume error on his Dell Inspiron 1501.
Bondings on Sun Jan 11, 2009 9:17 pm
I had the same problem. My solution was.. to get a new one :].
ArmeniansUnited on Thu Apr 23, 2009 5:55 pm
Good to know that a capacitor is a battery!! It's a condensator that stores electric energy in a pasive way. Now going back to the battery change, I have lot's of computers that I never ever changed the battery and still work perfect! Just use them with a UPS and they will work much better and protected!
blackdog on Thu Jun 11, 2009 7:06 pm
yeah i had the same problem and then i got ntldr is missing and i coukldnt boot then i fixed that with a cd and got another problem hgfd45 is missing and that problem was unfixable so i had to reset my whole windows instalation and instal it aigan lucky you didnt had that problem Laughing
jesse355 on Thu Jul 02, 2009 9:02 pm
This error message can be caused by many reasons. You are lucky to find it out quickly. Sometimes you have a problem with the power cable which don't charge the battery. When the battery is low you got the message!

For other times,the battery himself is death and you need to replace it...

It can be a soft or hardy issue.
Ladislas on Thu Jul 30, 2009 8:36 pm
All u had 2 do was change the boot settings in the bios! DELL's are like that!
Relentless on Wed Sep 16, 2009 9:13 pm
well not mine i had to make a cd and reinstal windows iv should have replaced that batery
enkyskateboard on Tue Nov 03, 2009 9:44 pm
Nice information and good to know. but for Me the solution is to get a new one.....
aldenis on Thu Jun 03, 2010 2:34 am
my computer at home experience the same situation...
matamlayin on Mon Aug 23, 2010 7:47 am
I don't think I've ever had that problem because I use Apple products Smile
matttaylor777 on Fri Mar 18, 2011 1:13 am
Some manufacturers do it on purpose. That's "the scheduled aging of product" and it's needed to continuing economic growth. You have to have deal with it...
tiedostokellari on Sat Dec 10, 2011 4:09 pm
OK, I have had the same problem a couple of years ago. Thanks for the post of this, this has helped me a lot !!!!
tomiwoj on Sun Mar 11, 2012 10:44 pm
never expericed but thank's for the information
diwasblack on Tue Jul 03, 2012 6:06 am
ooppss.. I have a dell too, need to be carefull
marqx on Sun Nov 18, 2012 3:20 am
It is usually a good idea to run chkdisk (check disk) regularly if you have any problems with it not finding the partition or saying that it is damaged. The /r flag tells it to try to recover the bad bytes. In case one doesn't know if you get the ntldr is missing message you can just copy it from the cd or wherever you have the file to the computer, if it is placed in the correct folder and whatnot t will be just fine. No recovery console or cd needed, just something you can use to drop in the replacement for the missing file. Smile I know more information than necessary. Congrats on getting it fixed Bonding.
pauline123 on Sun Nov 18, 2012 8:14 am
Good IDEA, thanks for sharing.
inder1 on Wed Jan 23, 2013 4:39 am
Nice information and good to know. but for Me the solution is to get a new one..... Rolling Eyes
loivu on Sun Mar 10, 2013 5:30 pm
I've been through the battery on the motherboard problem; Replace the battery. . all the symptoms go away and has been stable as a rock since.
doscomando on Thu May 30, 2013 10:39 am

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