Over 1 million tech questions and answers.

System will not boot with CMOS battery

Q: System will not boot with CMOS battery

I have a HP Pavillion Slimline S3600f and I'm running Windows Vista 64 bit. Couple of things happened first I attempted to install new memory. Well my board did not like it I was told that the memory was compatible with my system. Next, my daughter stuck her flash drive in my system kid didn't even know where to stick it, should have stuck it in her ear first because she had no clue as to what she was doing. don't they study first, nope. The next day my system would not boot. Did a little reading and took out the CMOS battery which allowed me to go into setup I changed the time and clock in the BIOS f10 save and exit, and it did not save it back to Jan. 2007. In order to get back into the system I had to turn off the system press esc to get into Load Boot which brings me to a screen where I select the hard drive. It then brings up screen Default Bios settings have been loaded due to BIOS update or checksum issue press f10 to enter setup otherwise allow the PC to continue. I let it continue and windows comes up but it takes about 10 minutes. I'm a little stuck here, do I have a major problem or something that can be fixed. I was reading and could use some help here I was reading about the ROM BIOS don't know what else to do at this point. I ran Hardware Diagnostic Tool and everything passed except the Smarshort self test took about 13 min. put it passed. I also ran a Sysem memory test and everything passed. Help me please!

Preferred Solution: System will not boot with CMOS battery

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link http://downloadreimage.com/download.php. (This link will automatically start a download of Reimage that you can save to your computer.)

A: System will not boot with CMOS battery

The system will not be able to hold BIOS settings unless the battery is in.

You mentioned 2 things that happened to the computer but not what the results were. Where did she put the drive? Did the system work after you tried the wrong RAM? Did either of these things cause damage, and if so, what damage? Did you check all your connections inside after changing the RAM sticks (things get loosened very often)?

Are you saying that Windows actually boots OK, though slow?

Read other 2 answers

Been working fine until a few days ago. When I turn it on it says 163 - Time and Date not set - There is no option in bios to set date Non-System disk or disk error replace and strike any key when ready - Bios cannot detect hard drive So the question is if the RTC Battery is weak or dead can it cause above issues Thanks Chris

A:Question about RTC Battery (CMOS Battery) and System Errors

CWILLIAM83 Hello;Allow me to welcome you to the HP forums!The answer is actually -- yes and no. A weak or dead CMOS battery will prevent the BIOS settings from being saved when you power off the PC. If the default settings work OK with your hardware, then the only thing you would notice is that the clock resets. But, if you customized your settings to see the hard drive, then the default settings might not see it. After you replace the battery, you would have to go through configuring the settings-- again.Good Luck

Read other 1 answers

Hello, I noticed about six months ago a memory problem was showing in my mini view on my xps 420. I removed the boards and reseated them and the error went away until now. I ran the diagnostics and followed the error code. It said my cmos battery was bad. I changed the battery and now it will not boot. I ran the repair cd with no luck. Can someone offer some suggestions ? Thanks--- Larry D

A:Computer will not boot after cmos battery.

Remove the CMOS battery.
Unplug the power cord.
Press and hold the power button for 10 seconds to fully drain all residual power.
Put the CMOS battery back in, make sure you put it in correctly.
Plug in the power cord.
Power up.

You should get a CMOS configuration error message. Press F2 to go into Setup, load defaults, set date and time and boot options then see if it will boot.

Read other 9 answers

My Dell dimension 4300 will not power up..ONLY when the cmos battery is installed!! When I take out the battery it powers up ok. I replaced the battery and the same problem. I did not mess with the jumpers on the mobo. Just removed the battery for a day and the power cable was detached so no power was available. Any Ideas what may be causing this?

A:no boot with cmos battery installed

Exactly how far into the boot does it get with the battery installed ?
Does it show a key to press to get into the Bios ?

You say you replaced the battery, was the replacement brand new ?

Read other 2 answers

After noticing my system clock was not keeping the correct time on a Packard Bell iMEDIA X2415 desktop running XP Pro, I removed the battery and went out and bought a new CMOS battery, which was a direct replacement for the original battery, after fitting the battery I restarted the system which then gave me one of those blue screens which we all love! with the error code 0x0000007B, indicating an inaccessible boot device, the rest of the blue screen code is (0xB84c3524,0C0000034,0x00000000,0x00000000) which, after a little research, indicates a device driver problem. In the standard CMOS setup the Primary IDE master is not detected, it is a SATA drive anyway, under advanced setup, the first boot device is the DVD drive, and the second boot device is my hard drive, listed as PO-ST3500620AS, so the system is recognizing the hard drive but cannot access it. I loaded Ubuntu linux from the DVD drive to check the condition of the hard drive which came out as an uncorrupted NTFS file system. I'm thinking, if it is a corrupt driver file, then replacing the driver on a system that will not boot could be problematical. I'm sitting here wondering how all this hassle could come about from a simple CMOS battery change!
Any help with this problem will be gratefully received.

A:CMOS battery change, now, non-booting system

Read other 7 answers

I have an Acer Veriton X490G,with Core i3 cpu,4 gig RAM,running a windows 7 32 bit...now this machine requires the CMOS battery to be reset all the time it to boot. Otherwise it doesn't seem like there's any form of power that's going to the motherboard. How do i go about fixing this? 

Read other answers

Dell Lattitude 6520, I replaced cmos battery, tried to reboot, got message to reset clock, went in bios and did that. Now startup screen, getting message to run system repair, did that and still won't boot. I have read on several sites that bios went to default settings when I changed the battery. Went in bios and changed sata drive to ACHI.
I have run system repair several times, tried to do system recover and restore, but no luck. Any help will be appreciated. Thank you.

Read other answers

Hello,So I followed every step in this tuto in order to flash my y510p's BIOS. https://forum.techinferno.com/lenovo-ibm/4668-lenovo-y410p-y510p-unlocked-bios-wlan-whitelist-mod-vb...  . Operation successful. However I modified something related to video card (GT Voltage offset). Now laptop only shows a black screen, no windows, no bios, not even the lenovo logo. I tried pulling out the cmos batery but it was soldered to mother board so i short-circuited it (i found out that pc's battery was plugged in when i short circuited the cmos)Now when i power on my laptop, there is no fan noise, no keyboard light, nothing. The only thing I get is the light of the power button.Is my laptop dead ? is there a way to fix this please ?Thank you

A:y510p do not boot after doing a bypass on CMOS battery

Hello ?? please anybody ?

Read other 6 answers

i have a satellite c50-b-14d a few days ago the hard drive gave up on me and i replaced it. exact same model. i installed windows 7 as i dislike windows 8 lol, started updating it fine then half way through updating i go to boot the laptop and it comes up with ---rtc battery is low , press enter to set time and date---- so i go in and set the date and time and hit exit saving changes, laptop starts i see the toshiba sign for 2 seconds and it turns off.

surely its not the rtc battery being low that is stopping it booting, i thought it might be the charger so i got a new one and still have the same problem, any help would be appreciated please.

Read other answers

I have an Acer Veriton X490G,with Core i3 cpu,4 gig RAM,running a windows 7 32 bit...now this machine requires the CMOS battery to be reset all the time it to boot. Otherwise it doesn't seem like there's any form of power that's going to the motherboard. How do i go about fixing this? 

Read other answers

I apologize for the length of my post, but I have gone thru several steps in trying to solve my problem.
I turned my Win-7 PC on and got the error message "CMOS/GPNU checksum bad".

Research suggested one cause might be the CMOS battery (#2032), which I replaced. I entered BIOS and everything looked good except for the date/time, which I reset. I then rebooted and got the error message "invalid partition table". At that point I inserted my Win-7 installation DVD to try and repair my installation. Unfortunately, no OS was found on the hard drive. So I selected the option to re-image (using a fairly recent system image stored on an external drive). After about an hour, the process was finished and I got the message that the restore was successful. A system restart was then required, but it was not successful....I once again got the error message "invalid partition table".

I also got the message that the reason that the startup repair was not successful was because 'no OS found on disk".

Any help/advice would be appreciated. At last resort I could try a complete reinstall of Win-7 but I would probably lose a lot of data that I had been backing up via the system image.

A:Can't boot or repair Win 7 after replacing CMOS battery

Hi Durango,

I would try the following:

Turn off the laptop/desktop
Unplug the External USB HDD (and all other USB devices)
Make sure ALL media bays (SD Card reader and DVD drive) are empty
Go into the BIOS config on boot up, and configure the boot sequence to leave off everything except Internal HDD, and CD/DVD (turn off the USB and secondary (if any exists) HDD from the boot sequence)
Reboot - and hopefully windows should resume without any error message.

Read other 5 answers

When booting an E-system 3080 laptop running Windows XP SP3 the boot procedure stops at the checking ram etc page and at the bottom is the message...

CMOS battery low - press F1.

I have had a look to see I can access the CMOS battery by removing any panels on the base such as the RAM, Hard drive etc. but looks like it requires more disassembly.

I think E-System machines are Dixons/ PC World's own brand and can't really find a lot of info online on Youtube or Google.

Please can any one provide information on how to access the CMOS battery on this machine. Thanks.

Read other answers

When booting an E-system 3080 laptop running Windows XP SP3 the boot procedure stops at the checking ram etc page and at the bottom is the message...

CMOS battery low - press F1.

I have had a look to see I can access the CMOS battery by removing any panels on the base such as the RAM, Hard drive etc. but looks like it requires more disassembly.

I think E-System machines are Dixons/ PC World's own brand and can't really find a lot of info online on Youtube or Google.

Please can any one provide information on how to access the CMOS battery on this machine. Thanks.

Read other answers

Hi there, firstly just want to say thank you to this forum - I'm newly registered but have followed a lot of advice here to fix machines in the past. Registering now as I need some advice of my own! Sorry for the long post, I just want to be as clear as possibly as I the computer is at my parents' house and my dad might need to run some tasks for me.
In summary:
My computer won't boot XP due to a missing/corrupted hal.dll error, which appeared after a successful boot. The machine hadn't been run for few years and the CMOS battery was flat. After setting the clock in bios it booted to XP fine, then produced error after 5mins. Puppy Linux mounted the drive but was too unresponsive to actually use. Ubuntu live cd won't mount the hard drives, giving exit code 13. My goal now is data recovery - I'll probably try to reinstall Windows or dual boot Lubuntu afterwards.
More details:
I've read lots about my error but nothing given how it appeared I need some advice as I don't want to damage the drive (I just want to recover the data before setting up a new dual boot config). Further details and steps below just in case it helps to isolate the issue, as I've read some people saying that the problem won't be with hal.dll but the boot.ini file (which I'd find odd as it did boot just like it used to). Additionally, whilst the error message said windows could not start, the message was the same when it did boot as well as when it couldn't. Is it just that the drive is still mounted in wind... Read more

A:hal.dll error after successful boot, CMOS battery flat

hal.dll is a very system specific file that is chosen from a selection of identically named files in the installer, especially for your setup, and then modified on on first run. You cannot replace hal.dll. An error with this file is one of the few instances where a reinstall is the only option.
Do not run chkdsk, it's likely to scramble your drive if it's not mounting properly and if there is a physical problem with the disk you may cause it to fail completely. Mounting it on another running Windows system and then copying your data over is another option that is worthwhile as Windows can sometimes handle NTFS better than Linux.
Failing that... you are right adding Testdisk to your list of options. That would be the next step..

Read other 11 answers

I have an Optiplex 755 USFF desktop computer that required the cmos battery to be replaced. After replacement the computer will not boot. It brings up the start windows menu, sasfe mode, safe mode with networking, safe mode command prompt, last know good configuration and start normally. Any option will bring up the WIndows XP load screen and then the computer re-boots right back to the start screen. One big loop. I can get the hard drive to boot in an Optiplex GX280 without issue. I was told the motherboard needs to be replaced but I switched system units and the same thing happens with this hard drive.
I've tried to reinstall the OS and get all the way to "starting windows" and then the blue screen of death stop error 0x0000007B (0xF7A10524, 0xC0000034, 0x00000000, 0x00000000). The computer is WIndows XP SP3, 1GB ram with 80 GB hard drive. It appears that setup doesn't reconize the hard drive.
Any help would be appreciated. 

A:Optiplex 755 USFF will not boot after changing cmos battery

After several hours of experimenting, I finally figured out the correct BIOS settings in order to get the computer to boot. There are three BIOS settings that have to be changed or checked from default settings to get it to work. SATA 0 must be on, SATA operations must be changed from AHCI to ATA, and under modular bay the default "on" setting must be changed to IDE. Save the settings and the computer boots right up.  

Read other 18 answers

HELP! Computer won't boot! Tried everything!

Ok so this is my set up:

DDR400 512mb Ram

Asus A7N8X-X motherboard

sapphire radeon 9600xt 265mb GFX

amd athlon 2600+ cpu (1.91ghz)

80gb HD (just some cheap one- i forget brand, perhaps seagate)

edit: a floppy and dvd burning drive

Ok and the problem is:

I installed a ripped off ****ty version of XP. Never really worked splendidly.
I changed somehting in the bios, i had no idea what it was, i'm stupid for doing so i realise. it was something to do with speed, it was at about 100mhz and i changed it to 200mhz. also note, i had the "bios virus alert thing" ON.
the next few boots were dodgy and it only booted up every second or third attempt. if it didnt boot up it wouldnt boot and just went beep (long beeps and repeated -in no code) this worked for 4 boots before it never booted again.
it just beeped.
until i moved the jumpers on the 3 pins from the two pins closest to the battery position to the furthest two. and turned the pc on. it didnt beep. the monitor didnt respond and but it seemed to be turned on (the cpu fan was going and a green LED on the mobo was on). i then turned the power off. and stuck the jumper back on the original pins and turned it back on hoping the BIOS would be reset but the beeping sequence continued and nothing seemed to start. So then i took out the battery for over half an hour... then put it back in. (with the jumper still on the original pins- nb: the... Read more

A:HELP! Computer won't boot! BIOS? Reset it. CMOS Battery? In and Outed it. HELP!

The Athlon XP 2600 that runs at 1917MHz runs on an FSB of 166MHz and has a clock multiplier of 11.5 (166 X 11.5 = 1909Mhz).

So if you have a system bus setting of 200MHz and the clock multiplier is set a 11.5, you were running it at 2300MHz, which is seriously overclocking it.

The processor might not have been up to that much overclocking and died.

Find out what BIOS settings do before you change them!

Read other 2 answers

I got BSOD on Emachine W4265 - entered BIOS and date was incorrect, tried to change date and save but would not save. Chaned CMOS Battery and now computer won't reboot.

A:BSOD - changed CMOS battery and computer wont boot

Read other 6 answers

Its a packard bell laptop, and the system started to freeze for no reason. No viruses. Now, I can usually only move the mouse pointer-if it lets me start windows at all (xp). As of tonight, the system wouldnt let me even pass the startup screen, it kept asking for a non existent system password to continue! The system bios clock seems to reset itself too, so I believe the whole problem to be related to the cmos battery.

My main question is, how much should I roughly be expected to pay for a cmos battery and installation from a general pc repair store? The laptop is out of warranty, so I dont really want to be spending 30+ just for Packard to find and install one either. The reason I need someone else to do it is because this particular packard system has the most awkward setup, and therefore access to the battery is next to impossible..

as you can see from my (slightly blurry) photo-

there are only 3 panels on the back of the machine that you can remove- 1 hard drive, 2 ram, and 3 wifi card (I think!).. the cmos battery (the circle!) is to the right of one of the panels, under the casing. I have tried removing the entire casing, all screws and connections, and even from the front, trying to get to it by removing the keyboard, but it proved impossible to me, so Id rather get someone else to do it. No doubt the difficulty is on purpose so that you would always send it to packard for repair, and for a high price, bu... Read more

A:wont boot, bios/clock errors-how much to replace a cmos battery to fix this problem?

If there's a dismantling guide for your laptop online you could try to fit a new battery yourself.
If you're ok with that post the exact model of your laptop and I/we will help you look.

Otherwise to get the best deal I would phone a few small local computer shops and compare their prices with big chains like PC World.

Read other 1 answers

I have two identical Dell XPS 8700 for my kids. I got them around May 2015.  They use them mainly for steam games and Office 2016.Both running the Windows 10 AU.Today on one of them, by son said a message popped up and asked to stop a service and he clicked yes. Then all there was, was a gray screen and mouse pointer. He came and got me. The pointer would move but nothing else responded. So I did a power shut down. On reboot, the machine took around 40 seconds from seeing the dell logo to the sign on screen. This seemed very long. So I rebooted the other machine to see how long it takes, and it was only 3 seconds from the dell logo to the sign on screen. I do not know if the long boot time has been going on or just started with this issue.I ran sfc /scannow and it said no issues.I remember in September 2015 ( a year ago) I had an issue with this machine where on power on, all I would get is the spinning dots at the Dell logo and it would not boot into windows. I even let it sit there for 24 hours and just spinning dots. I even tried new install of windows where the machine would let me install new windows, but after updates, the same thing happened with the spinning dots.After a tons of troubleshooting, a dell tech recommended pulling the cmos battery. I did that and from then on it booted fine.So since the long boot time did not seem right, I pulled the cmos battery again. waited 30 seconds, put it back in and booted into bios, change the clock (not sure if I had t... Read more

Read other answers

After my friend's laptop wouldn't run on battery power OR charge the battery I tried many "fixes."
Shockingly none worked that I found.
Only one thing worked for me to my surprise.
A last ditch effort was to open up the laptop (sony pcg-81114L) and disconnect the cmos battery for a few minutes to reset the CMOS.
To my surprise, when powered on, the battery instantly showed it was charging AND when removing the power plug the battery POWERS the laptop now! (and I'd thought I was wasting my time.)
Worked with an off brand battery also.
Many times this has saved many computers that have odd "unsolvable" things wrong with them.
Surely someone else has done this also but I haven't seen it posted anywhere to my knowledge.
Thank GOD for bringing the idea to remembrance!

A:sony vaio won't charge battery or run on battery power (CMOS BATTERY FIX!)

Hi askfault,
Do you have any information on how this fixes the battery problem? would be interested to know.

Read other 1 answers

I got very interesting problem here. I just build new PC:
Albatron KX400-8XV/XP2200/Kingston DDR 512Mb RAM/Maxtor DiamondPlus 80 Gb/CD-ROM + CDRW/Floppy.
When I first turned new PC "on" - everything went OK. All three fan's (two on motherboard and one on case) turned "on" too.
Then I heard one short beep. I access CMOS setup and tried to auto detect my HDD - no success, my HDD was not recognized. I tried to change jumpers from MASTER to CABLE SELECT - with same result. Both my CD-Rom and CD-RW, floppy drive were recognized by CMOS but interesting thing is: when I setup sequence (1.Floppy, 2.CD-Rom, 3.HDD) system wont boot from either of them. I only can see black screen with some info on it: motherboard name, processor model, how much memory and then system starts to look for HDD but can not find it and hangs.
I tested HDD on my anoter PC and test went OK. I tried to switch HDD, CD-Rom and CD-RW connectors between IDE1 and IDE2 connectors on motherboard - still the same.

A:New build PC: CMOS does not rekognize HDD, system does not boot according to boot seq

Hi, Just a thought but probaly not so since (Atapi and Floppy are being detected) Be sure to chek that the Clear CMOS jumper is set to the normal mode, usaually (pin1 to pin2).
Copy the Drive Parameters off the Max hardiskoff and manually enter them in under Primary IDE in BIOS.
2nd, just a thought but hav you chekd for the proper orientation of the signal cable for the hardisk to make sure pin1 red is properly orinted on the disk and the end goin to the controller on MB. Also, try chngin out the Primary IDE signal cable with a known good one. Let us know.

Read other 3 answers

Hello everyone,
I have been having a problem with my laptop recently. A few weeks ago my laptop turned off, and wouldn't turn back on. I did some googling, and found suggestions to remove the memory, SSD, and CMOS battery, wait, then put them  back in and try again. When I did that, it didn't work the first few power button presses, but then it turned on. It has been consistent like that. I have the battery out, and on AC only, when I remove AC and CMOS battery, then plug the AC back in, the laptop will boot after hitting the power button a few times.

Any suggestions?

Read other answers

I have just replaced my CMOS/BIOS battery today, as , I have faced some critical problem regarding regular BIOS date/time reset after system shutdown. But I want to know how do i recognize, that my new batter is totally ok or functional.

Battery Meter gadget shows that "battery Not charging"
Is it a gadget problem?

Is there any method available so that I can track that my new installed CMOS battery in PC is working fine?

Please help me.

A:Battery Meter shows CMOS battery not charging

The battery you have replaced is solely there to maintain the clock and other BIOS settings (if you have changed them from their defaults). It will not prevent you from booting your system if it is dead/missing; all it means is that you will have to enter the BIOS each time and make the correct settings and time. This battery is not rechargeable.

Do you still have to enter the correct time, or is the BIOS maintaining this now you've changed the battery?

Read other 5 answers

This is a first...

A friend was visiting for three days and a few things seemed to change. He shut off my monitor when not using the PC. It didn't come back on when I hit the power, so I hit the menu button and tried to get the thing up & running. I didn't get into the monitor's menu.

That's the only thing that was done differently. Now XP asks for the CMOS setting every time I boot up. It asks for standard (F1) or advanced (F2). When I do the standard setting, my computer starts back to the year 2002 at 12pm.

How can I get things back to normal, when I turn the PC on and it boots up in XP like always?


A:CMOS setting: XP won't boot w/o going through CMOS

If the date changes, chances are that the CMOS battery needs to be replaced. Just a co-incidence on timing and your friend, I'd say.

Read other 1 answers

I need to replace the CMOS battery.  What battery number, e.g. 2302, or part number am I looking for? Thank you.

A:CMOS battery

Hi: You would replace the CMOS battery with the CR2032 3V battery. You can get that battery almost at any store.

Read other 1 answers


Read other answers

What kind of battery do I need for B690, generic button or something special?

Read other answers

Tech Support Guy System Info Utility version
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i3-2330M CPU @ 2.20GHz, Intel64 Family 6 Model 42 Stepping 7
Processor Count: 4
RAM: 4043 Mb
Graphics Card: Intel(R) HD Graphics 3000, 1797 Mb
Hard Drives: C: 449 GB (352 GB Free);
Motherboard: Intel Corp., Base Board Product Name
Antivirus: None

Just a quick question...

Just yesterday my battery finally decided to give out after 6 years.It will no longer charge.I had decided to unplug the charger and when i did the computer shut down immediately.I plugged the charger back in,turned on the computer and upon initiation i immediately got "cmos battery failure" error.I can only assume this is from the battery pack that just died? Does the battery pack keep the cmos battery charged? Should i change the cmos battery too? I just ordered the battery pack.If i do need another cmos battery,is there a particular one that i should get or can i just get anything as long as it fits? I have only changed a cmos battery in a desktop once back in the 90's.I cant remember what i got.I have never put one in a laptop.Good thing is,it's easy access in my laptop.I just want to be sure tht i actually need one after i replace the battery pack and what exactly i should get..thankyou

Read other answers

I have a ASUS motherboard.When my Pc star to bootup,I have a line in the end that tall me that the Cmos Batt is lower and the date and time is not accurate or something like that.What kind the battery is this one and what do I have to do to change?



A:Cmos Battery

The most commonly used battery is CR2032. If you still have the P4S800-MX motherboard (from a May post), turn off your PC and remove the left side cover. The battery is a 5 cent coin size disk near your IDE drive connectors.

You can get the battery about anywhere (I saw them at the grocery store last week).

Read other 1 answers

I need to know which way the wires (2 of them total) go on my compaq armada 7770dmt. While replacing the cmos battery I got the wires mixed up when I put the plastic end on. Since the plastic piece only fits one way I know that it must matter which way the wires are attaached. The colors of the wires are red and white. I cannot find a schematic for the motherboard.

A:cmos battery

i cant find anything on the HP website
you may want to post the question in the support forum

Read other 1 answers

What happen when I put cmos battery in motherboard dell 745 it cannot start!!!its new battery...anyone to help me please?

A:Cmos battery

Check and make sure the battery seated correctly. Also make sure you did not jar your memory loose. This will prevent . The computer from booting also.

Read other 4 answers

Hi guys and gals, quick question. I have a HP Pavilion G7 laptop that was giving me some cmos error messages so after some ridiculously rigorous searching, I found the battery. My question is, does the numbers on the battery mean anything? Meaning, ive found HP pavilion Gy batteries on line for sale but the numbers on the sticker on the rubber housing dont seem to match. Im wondering if that is just the warehouses part ID. This one says, "1126. 12." If anyone is familiar with these please let me know. Thanks


Read other answers

Question. In the motherboard manual it says to use a flat screwdriver to pry the cmos battery to change it. Well, I was doing that and the cmos battery sparked. First question is, what tool do you guys recemend. So, the motherboard cmos holder doesn't break, and so it doesn't spark again?
Second, is a spark from a 3v cmos battery harmfull to me, if it came up the screwdriver? I don't even know if it did, but I was a little freaked out by the spark, because it didn't say anything about it possibly happening. Of course, the pc was not plugged into a wall or anything. It, was just the battery itself.

Thanks everyone

A:Cmos 3v battery

Probably ran into a residual charge on the power supply.
Want to make sure not to short the 2 battery contacts or
short it to any metal on the case.
You can usually discharge a lot of that by pressing the power
button with the power supply turned off or unplugged.
The battery holder should have metal clips on one side.
Press on the opposite side of the battery to push it against the clips
then lift it out.
The clips are spring loaded to hold it in.

Read other 1 answers

would it be a bad idea to replace the cmos battery in a desktop computer while it is powered on? i want to do this because it would prevent the loss of any information such as system time and some bios settings (boot sequence).

A:CMOS Battery

Yes.....a Bad Idea.......

Read other 2 answers

I was having a problem with the computer keeping time while it was shutoff. I installed a new cmos battery and the time is still not keeping when powered off. Any suggestions.

A:CMOS Battery

Read other 7 answers

I need to replace the CMOS battery in this older computer, and need to know the correct one to buy.  The HP website generic instructions and video shows that the battery is a 2032 , but I would like to be certain.  Can anyone tell me exactly which battery I need to buy?  Thanks.

View Solution.

A:CMOS battery

Hi, Yes, they are all the same 3V CR2032 which you can buy from many shops for few dollars. Regards.

Read other 2 answers

I have a 486 mother board. When I boot up into DOS I get a message saying, CMOS BATTERY LOW. How do I replace it.

A:CMOS Battery

Crack the case open and look for it. THe older ones on 386 and 486 motherboards were some times integrated into the BIOS so you might be out of luck. Others had a small black pack that looked like 4 AAA batteries connected together and a red/black set of wires running to the motherboard....you can still get those.

Read other 3 answers

Hi guys,

My computer just started having this problem since Christmas. I've had this mobo since 2007, and this is the first time when I switch on the comp it gives me thsese messages randomly:

"CMOS battery low"
"Error loading drive A"
"Error boot sequence"
"Press F2 to continue or F1 to enter setup"

I went into the BIOS and it is always set at factory default settings, even when I attempt to change them to the previous settings I had. It gives me a message that says that because the CMOS battery is low, my date and time and other BIOS settings will be reset to default, then gives me the error boot sequence msg, and still continues to load windows, and desktop is messed up a bit, but otherwise "normal" except for the sys tray that's missing icons...

I have never really encountered this situation before, but the solution seems straightforward: replace the CMOS battery, only that I don't know where to find it! I've tried tigerdirect.ca, newegg.ca and even a local computer store, but they don't have it on their website.

My mobo is an OEM (Lenovo 3000 J205-9686) ASUS M2A-VM with a 690G chipset & AM2 socket. What additional details do you need to know what CMOS battery I need to buy, and if possible, any websites I can go to in order to find it (preferrably Canadian due to shipping costs, but I don't mind US).

Also, my OS is win 7 RC (although that might not be relevant)... Read more

A:CMOS battery low, help?

CMOS batteries are almost always CR 2032 basically a button battery taht is a available in most big box stores or electronic store. Take the side of the case off and see if you can locate

Read other 2 answers

Question : Does anyone know if a "faulty" CMOS battery (the CR2032 type) can stop a laptop working?

This is the sequence of events: -

1. Booted laptop from standby as normal.
2. Logged in
3. Everything working as usual for about 30 minutes

Then I stopped working on the laptop to talk to someone. While we were talking I noticed the laptop screen suddenly went blank. From that moment forth the little darling has been as dead as the Christmas turkey.

My experience with CMOS batteries that are about to go play a harp is that they indicate this by displaying the wrong date and time. Even then it can take days or even weeks before the battery finally gives up.

I used my last CR2032 a few days ago, so before I go trundling down to the shops I would be grateful if anyone could tell me if a "deceased" CR2032 can make a laptop suddenly die.

I haven't seen that before.



A:CMOS Battery.... perhaps ?

Read other 7 answers

I just tried to install a new battery and broke the spring clip part of the socket. Is there a remedy? TIA, Brian

A:Cmos Battery

Unfortunately there really is no easy repair for this. It would require desoldering the old battery socket and soldering a new one in. While this is not rocket science, it does take great care and some skill to do. A minor slip or laving the soldering iron in place too long can do some real damage to a motherboard. It is best left to a technicial with the proper equipment and skill to do. I would consult your local computer shop about this repair. And it may take a referal to someone else.

Read other 2 answers

i have an acer extensa 5620z which could only power on in few seconds then goes back off ,i did some research and i discovered that it was the cmos battery that was dead so i change hopping that every was going to be fine . when i plug the adaptor in to a power extension, first the pc came on automatically and when i shut it down to and couple it ,it could not come on again.so i discovered that each time i remove the cmos battery and put it back the machine will power on but once i shut it down and couple it will not come on even to show a light .so i dont know if there is a configuration that i need to do please help me

A:cmos battery

Hi and Welcome to TSF!

A dying CMOS battery shouldn't prevent booting. A dying power supply or battery on the other hand might.

Read other 2 answers

Hi can someone help please I need to replace the CMOS battery in my laptop but have not had any look purchasing one all local retailers say they dont stock them even the one where I purcased the laptop from, I did get one from Amazon which said it was the correct one but when I recieved it it was a slightly different end to the cable so can someone advise please. The model is HP G62 Notebook & the battery is a CR2032HF-243V. Thanks Normski.

A:CMOS Battery

Norm. To better help you we would need the exact model number or product number of your laptop/desktop??? http://support.hp.com/us-en/document/c00033108 REO

Read other 3 answers

CMOS battery

What happens and what is the danger to your computer if the CMOS battery dies?

A:CMOS battery

The CMOS battery is a very low powered device, just like a little watch battery.

So don't stress, it ain't gonna kill you.

However, its needed to keep data in the CMOS. The CMOS tells the computer what processor is installed (although many computers have jumpers set to tell it this), what drives you have (diskette, hard disk, CD-ROM, and others, and importantly your hard drive's geometry), how much memory is installed, and other important data that your computer needs to know in order to run correctly....

I imagine what would happen if it completely ran out would be that the CMOS would have to be re-written to manually in your BIOS program every time the machine was powered on for anything like normal operating to occur. Certainly you would loose the time settings and would have to redirect the BIOS to redetect the hard drives everytime you powered on.

You can replace a CMOS battery quickly and easily. They are very cheap and just clip out and in to the motherboard. It resembles a small silver disc about the size of a coin.

This is assuming that your computer is not totally ancient (like a 8088, 8086, maybe 286 or something) where the CMOS battery was sometimes not removable. If this is the case then get a new computer you sad man..... Otherwise, it will cost you nothing to replace and if you are not sure of yourself a computer store will do it in about 1 minute.

Read other 1 answers

what is this error when i boot my cusin portable it doest boot immediately error appears as" bad cmos battery -error date & time. it says there that i need to choose either f2 (utilities bios or press f1 .when press f2 it goes straight to bios of course! but the best option is to press f1 so it will bot normaly to the xp windows OS specs is WIN XP SP1. Do we need to replace the cmos battery now.

A:Bad CMOS battery

Does it do this on every boot up? Have you tried going F2, after your in the bios hit F10 (should prompt you to SAVE, if not, then exit and save) If it continues to do this then yes, you will need to replace the CMOS battery and hope that it is just the battery and not where it sits.

Read other 5 answers