DIGIT-ARC read-only archive · snapshot: July 23, 2026

DIGIT-ARC / Hardware / PC Components / Configurations

CMOS battery failure

12 posts · originally from https://geek.digit.in/community/threads/cmos-battery-failure.150574/

pkkumarcool
pkkumarcool Original post #1
Dec 28, 2011 at 9:35 AM
Hey friend recently i am having another issue.My time in windows 7 keeps changing everytime i switch on my computer.When i start my computer error message shows "CMOS battery failure press enter to continue", pc starts and time changes to default! Do i have to change my cmos battery?
khmadhu
khmadhu #2
Dec 28, 2011 at 10:57 AM
pkkumarcool said:
Hey friend recently i am having another issue.My time in windows 7 keeps changing everytime i switch on my computer.When i start my computer error message shows "CMOS battery failure press enter to continue", pc starts and time changes to default! Do i have to change my cmos battery?
Click to expand...

Yes Indeed....
roque
roque #3
Dec 28, 2011 at 11:23 AM
pkkumarcool said:
Hey friend recently i am having another issue.My time in windows 7 keeps changing everytime i switch on my computer.When i start my computer error message shows "CMOS battery failure press enter to continue", pc starts and time changes to default! Do i have to change my cmos battery?
Click to expand...

I don't think u need to do that...just remove it first and place it back firmly....it happened with me too once...was able to solve it by the same...
CA50
CA50 #4
Dec 28, 2011 at 3:19 PM
@pkkumarcool, its advisable to replace the battery, it cost some 20-25 bucks :)
pkkumarcool
pkkumarcool #5
Dec 28, 2011 at 6:27 PM
CA50 said:
@pkkumarcool, its advisable to replace the battery, it cost some 20-25 bucks :)
Click to expand...

Thanks for reply everybody,i have removed and replaced cmos battery but still problem not solved will replace my battery tomorrow:-o
CA50
CA50 #6
Dec 28, 2011 at 7:15 PM
^ you can measure the current voltage or the CMOS battery using a a voltmeter or a multimeter.

Note that the voltage must be >2.x V to work properly
mithun_mrg
mithun_mrg #7
Dec 30, 2011 at 8:30 AM
if replacing the battery does not work then probably CMOS RTC chip is not working u need to RMA the MB
pkkumarcool
pkkumarcool #8
Dec 30, 2011 at 8:51 PM
Replacing the chip worked!!!!! Thank god it wasnt a big chip failure!:-o
d6bmg
d6bmg #9
Dec 30, 2011 at 9:06 PM
^^ Eh!
FYI: I guess it was your first time. You need to replace the battery once every 2-3 years. Matter of fact. ;)
pkkumarcool
pkkumarcool #10
Dec 30, 2011 at 9:12 PM
**imageshack.us/photo/my-images/594/30122011035.jpg
K
khanhasim #12
Jan 13, 2013 at 1:39 PM
pkkumarcool said:
Thanks for reply everybody,i have removed and replaced cmos battery but still problem not solved will replace my battery tomorrow:-o
Click to expand...


hey i have the same problem you have please tell me which chip you changed