HP G60 126NR :: Laptop Will Not Boot Unless CMOS Battery Removed
May 18, 2009
I have a HP G60-126NR laptop. One day, it was stone cold when I press power button. I discharged the mothboard. I then installed a new CMOS battery . I am using the power adapter to power unit. When I press the power button , I get nothing toally dead, except to show the power connection light. If I remove the CMOS battery, then discharge the motherboard again, then plug in , and the laptop powers up without touching power button, and goes into setup screen to enter time. After entering time , it boots into Windows without issue. Windows SFC scan shows no error. If I shut down, not sleep, the laptop is dead again unless I discharge motherboard and start from square one. Also, I want to say that while Windows is running, if I close the lid to put to sleep, you can see that the screen is still active despite changing "what happens when I close lid". My diagnostics tells me it needs a new motherboard. PS: I did flash the BIOS off of HP Website thinking it would resolve my issue, but it did not ....
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May 15, 2013
My Dell XPS 15z is showing the following problem :-- if I try to boot it with the battery connected (and AC power either plugged in or not), the orange power light flashes briefly and then the machine shuts down- if I remove the back of the case, disconnect the battery, connect the AC power cable and boot, the system boots as normal
Other observations
- BIOS version is A07, I can not upgrade this to A12 as, when I try to with the battery disconnected it basically tells me I have to have a battery connected to do the upgrade- when I click on the battery status button on the side of the case with the battery connected, one LED lights- when I click on the battery status button on the side of the case with the battery disconnected, no LEDs light
What are the next diagnostic steps?What is the likely fault - could replacing the battery unit solve the problem or is is the component which charges the battery which is likely to be faulty?The laptop is 18 months old but only covered by a one year warranty with Dell.
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May 23, 2009
Anyone know what might have caused this? Then again, I didn't try turning on the laptop before removing it. It's been sitting around about two weeks
I was removing the keyboard so I could have a look at the wifi card to see if it was loose since my sis was having technical issues with it. Anyway, now the laptop just doesn't boot.
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Mar 8, 2010
Last Friday i received my new Studio 1749 with i3. As told by the documentation I put in the battery, put the power cable in the ac-adapter, pluged the AC-cable into the laptop and then pluged the ac-adapter into the wall outlet. I booted the laptop and once I was on the windows desktop had a look at the battery symbol. It showed that the laptop was connected to external power and that the battery was being charged.
I wen't away from the laptop to let it charge the battery for 12 hours as told by the documentation. After two hours i came back to have a look at the laptop and it was off. Curious I turned it on again. After booting up it showed the battery at 60% and the laptop running from battery. Yet the ac-adapter was connected to the laptop. I hadn't changed anything. I pluged the adapter cable in and out, but it wouldn't recognize that the was external power available. Turning the laptop off an on again didn't work either.
Now I feared for the battery. My guess is that at one point it started to run on battery power even though it was not charged for 12 hours. Then when the battery was depleted the laptop shut down. This might have permanently damaged the battery!
I guess as soon as the laptop was off the ac-adapter charged the battery again, and when I came in it was just at 60%.
So I turned it off removed the ac-adapter, removed the battery, put the battery back into the laptop pluged the ac-adapter back in and booted up again. Now it showed it was running from external power again. All fine. It charged the battery as well. Actually it charged the battery up to 99% and then out of nowhere the battery symbol changed and it was running from battery AGAIN! Even though it was still connected to the ac-adapter. This happens all the time. It is reproducable.
So I thought something might be wrong with the ac-adapter.
I powered down the laptop and removed the battery. Now with only the ac-adapter connected ,I tried to start the laptop. The control lights above the keyboard came on for 2 or 3 seconds and then the laptop turned off again. Trying to hit the power button again after that didn't give another reaction.
Conclusion: The laptop won't run just on external power with no battery in the battery bay.
I put in the battery again. AC-adapter still connected. Hit power. Laptop starts to boot. Then while booting I removed the battery. Laptop keeps on booting - finishes booting - runs nice and well at full speed not missing the battery - FOREVER.
So it won't boot with the battery removed, but it will run without it flawlessly??? Strange isn't it?
Next test: I put in the battery again while the laptop is running from mains. And now it charges the battery again until the point... you already know... it "forgets" that it is connected to the ac-adapter and starts running on battery power. So now I boldly removed the battery while the laptop was running. After all it was still connected to mains/ac-power.
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Jul 11, 2009
MY Compaq notebook's battery will only charge if I remove it and reinsert it. Is the battery defective or something on PC?
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Nov 1, 2009
Does anyone know the part number to this or somewhere I could order online?......................
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Jan 26, 2009
I have laptop Dell Inspiron 3200 p-2. I wanna buy cmos button battery before i open.I am not sure how to install.Please let me know the nmae/number of this button battry
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Oct 12, 2009
I have a friend with an acer aspire 5920 and it is showing major symptons that the CMOS battery is dead.
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Feb 3, 2009
i have no warranty on my laptop and i cannot remember the bios password
i have been advised to reset the cmos but
i don't know where to find it in my laptop.
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Mar 3, 2015
I've been losing date and time recently. I update files, then take them home on a USB flash drive and they appear to be older than what's at home. Turns out my date and time are maintaining. I have to reset date and time when I boot up now. Pretty sure I need to swap out the CMOS battery (maybe a CR2032?) how to find it once the case is opened?
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Oct 4, 2008
My laptop fell off a table whilst the disk tray was open and jammed the disk tray shut.
It didn't damage the laptop at all, just made a whirring noise every time I turned it on and off because there was a CD still in there (been like that for a few months). However, today the tray opened a little and so I pulled it right out. I know enough about computers to know that I haven't damaged anything else, just removed the tray.
Now my laptop won't turn on, and even the charging light doesn't come on. A piece of plastic ribbon/connector that was attached to the tray is loose - could it be that?
(Acer Aspire 5920, Windows Vista)
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Apr 8, 2013
in February 2013, I bought 2 Inspiron R17-5720 in Amazon. Now, in both laptops, it is impossible to boot the machine.
When I power on, appears the Dell logo and nothing more.
I run the CD Utilities and I got the following message:
Error code 4C00:0320
MSG:SYSTEM:CMOS failed the pattern test.
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Apr 26, 2013
I have a Dell Inspiron 1525. It was not booting, seemed like it had some issue with the motherboard. Got it changed. It worked fine for one day, then again the next day it was not booting. Then I tried removing the battery and kept the adapter on and it worked. Now is the battery faulty? Do I have to change that, or could it be some other issue?
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Jan 12, 2010
i've currently got the back off my laptop and can't realy see the CMOS battery or anything to reset it such as jumpers, the closest I can see is a yellow thing under some casing I cant get to, can anyone supply me with some information with how to reset it on this chassis? i'm not going to have to take the front (keyboard etc) off am I?
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Aug 30, 2009
i am attempting to replace the CMOS battery in my presario; however, i can't seem to find it. i have tried to search for the service manual for this model but could not find it. i looked at the service manual for the C300 series and it indicated that the CMOS was under the memory module, but it isnt in the same place in mine.
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Sep 16, 2014
Get a blank screen on the first reboot after disabling the secure boot following the procedure in this link: URL....
Laptop is
Product- F5Y33UA#ABA
Model - 15-d017d
(Thats all the info on the back, no product line eg... pavillion, envy, etc)
Tried a hard reset but no joy. Looking at some other posts on this forum, it seems that the next logical step would be to reset the CMOS. Trouble is I can't find any documentation to do with this laptop anywhere, so am unsure of the procedure.
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Feb 4, 2009
I have T140p with bluescreens, I've replaced the harddrive, the voltage regulator and disconnected almost every peripheral. but still - have bluescreens. Is it possible that the Cmos battery is responsible for it
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Dec 7, 2014
Recently replaced the CMOS battery ourselves after getting the 5 beeps. Put everything back together but a couple of screws were loose and came out. Regardless the computer booted up fine and worked for a week. Yesterday it would not power on, at all. Unscrewed everything, opened it up, found some loose connections and tightened up, then replaced missing screws, seemed that they were tight and not spinning in place. Computer powered on fine. Next day, computer powers on again. Then, after a brief power down, it won't come on. AGAIN. Opened everything back up and saw the hard drive was loose so tightened that up via external screw. Put back together and made sure all connections were tight and re-screwed. Still will not power on.
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Jan 26, 2015
Daughter's Pavilion dv6 Notebook will not always boot up beyond the HP screen if battery if fitted
Product number: WR498EA#ABUSerial number: [Personal Information Removed]
Operating system: Windows 7
Symptoms are that with a battery installed, the laptop does not always progress on start-up beyond the initial HP screen, which can be fuzzy at the top. A solution is then to remove the battery and restart on mains, which is fine, but not convenient to always only rely just on mains power. conducting battery test indicates requires calibration
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Nov 21, 2014
I have a xps 13 l322x that won't boot up. It shut down after battery died, it was plugged in to charge and it won't turn back on.
When power button is pressed the LED in front of the touch pad blinks once.
The F12 with the power key does the BIST and the colors show up.
The Fn key with power key does nothing.
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Jan 11, 2015
where my laptop would shutdown randomly and give me a real time clock error. I googled around and found that replacing the cmos battery would fix the problem. I tried it out but still i am getting this problem.
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Sep 22, 2011
I have a Hp pavilion dv6700 series (dv6840el) and it just won't boot without the battery attached.
If i plug the AC adapter, i get some computer activity (fan, dvd drive noise and HD drive spins) for about 5 seconds and then shuts down.
Once i plug the battery (which is dying, needing a replacement), the laptop boots fine.
So, my question is: is this a motherboard or an AC adapter issue?
The AC adapter seems ok, though. But if i'm considering to buy a spare battery, i must make sure that i don't need a new AC adapter as well.
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Jan 25, 2015
HP dv7-3065dx Entertainment Notebook. Win 7.
HP battery alert system detected battery capacity to be very low error 601 (internal battery). So I changed the cell to a new CR 2032 battery. Showed the same error. I changed to another new CR2032 battery. The second time I did this I had a new 502 CMOS error along with the 601 error. My clock reverted back to 2009, I lost some of the icons on the lower right, and my wireless internet disappeared.
Now I have two things that need to be fixed.
I turned on, immediately hti ESC, hit system diag. F2, Battery Test:
Battery Test Primary FAILED (on the first battery I put in, didn't check on the second)
Control - Device Mgr. - HP - Batteries - Microsoft AC Adapter, Microsoft ACPI Compliant Control Method Battery, and Microsoft Composit Battery all show that they work.
System CMOS/realtime clock says its working.
Microsoft System Mgmt. - BIOS Driver v. 6.1.7601.17514 from 6/21/2006 says it's the latest version.
I've manually updated my clock. I'll figure out the wireless and icons later I guess. Just need to know what to do about the errors.
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Dec 1, 2009
Last night I was using my E1705 running on battery when the thing just suddenly zapped off. I had recently glanced at the battery meter which was 75% full. I pressed the button on the actual battery which shows 3 of 5 lights on the charge meter.
The battery itself is only 1 month old and has been performing flawlessly. I just thought it was something random so I plugged the machine in and it started up.
I didn't think anything else of it till today when I went to move my laptop, removed the power cord, and the laptop turned off. I checked the physical battery meter which still reads 3 of 5 lights .....
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Aug 4, 2009
my new custom HP DV6T will be in the mail soon, and I would like to know what programs I can remove... The ones I plan on removing are already crossed out... What about the three in the blue box, can those go? I would like to keep MS Works, Adobe, and IE,
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Mar 2, 2010
I see that the SR Series has been removed from the Sony Style website.
Anyone know if the new S Series will be available soon?
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Sep 19, 2009
I have a Dell 1525, bought in April 08, about 3 months ago time started to get out of sync and multiple problems with battery "plugged in not charging."
So today after charging the battery from a friends external battery charger ( friend had same problem) I was updating the BIOS to A16 from A06 and when the laptop was restarting with the bios update I get a message saying "Time of Day Clock Stopped."
My question is if I replace the CMOS battery will this solve the problem?
Looking at dell documentation from
http://support.dell.com/support/edoc....htm#wp1179839
looks tedious and time consuming but not hard .....
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Apr 10, 2008
i have an acer 9410z. how to clear cmos lost password
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Feb 28, 2009
Is there any way to do this short of taking the whole laptop apart to pull the cmos battery?
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Feb 16, 2010
Anyone have pics of an SXPS 13/16 keyboard with some/all keys removed? I'm curious as to what it looks like and am too scared to remove my own.
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