Over 1 million tech questions and answers.

BIOS clock slow- Not due to CMOS battery

Q: BIOS clock slow- Not due to CMOS battery

Hey everyone...it appears I'm having some issues with a slow clock. I have an XPS M1330. Initially, it would fall behind a few hours each day, INCLUDING the BIOS time. Also I noticed frequent Wi-Fi disconnections, as well as when I would shut down the laptop, it would not completely shut down. It would go into what I believe would be an "idle" state, showing the blue power LED still being lit. I would have to then manually shut down the laptop by holding the power button. That was the only way of getting it out of the so-called "idle" state. So first thing I decided to try was to replace the CMOS battery which was the first suggestion. After replacing the CMOS battery, I got about 2 weeks of flawless performance; no slow clock, and no powering off issues. Now, the clock is running slow again and I can't seem to figure out why. I updated to the latest BIOS (A14 I believe), which seemed to work for about a day, now it's back to being slow again. It is not shutting down properly either. When I check the BIOS time, it is also incorrect. I'm not sure if this a motherboard issue or what but any suggestions or ideas would be great.

RELEVANCY SCORE 200
Preferred Solution: BIOS clock slow- Not due to 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: BIOS clock slow- Not due to CMOS battery

I wanted to bump this because I really want to see if anyone has any idea or answers as to what this could be or how to fix it so I can save myself some money and not buy a new motherboard.

Read other 22 answers
RELEVANCY SCORE 95.2

For the last week or so I've been having problems with my Acer 5050 laptop. My computer clock loses about .6 of a second every second. I keep my computer virus scanned and defragged regularly. Yesterday, I noticed that when I go into the BIOS, the clock flickers back to 1969 for the tiniest second before counting the next second. So I updated my bios to latest (3319) and then replaced the CMOS battery. It still does it. This is been wreaking havoc on my games. In wow, I run half as fast as anyone else does. The windows 7 clock is WAY off (days!). Here are my logs. Any help would be greatly appreciated.--SicariusLogfile of Trend Micro HijackThis v2.0.4Scan saved at 12:47:35 PM, on 8/1/2010Platform: Windows 7 (WinNT 6.00.3504)MSIE: Internet Explorer v8.00 (8.00.7600.16385)Boot mode: NormalRunning processes:C:\Program Files (x86)\World of Warcraft\WoW.exeC:\Program Files (x86)\Mozilla Firefox\firefox.exeC:\Program Files (x86)\Mozilla Firefox\plugin-container.exeC:\Users\Sicarius\Downloads\HijackThis.exeR1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/?LinkId=69157R1 - HKLM\So... Read more

A:Slow CMOS clock, but not battery?

Welcome to the BleepingComputer Forums. Since it has been a few days since you scanned your computer with HijackThis, we will need a new HijackThis log. If you have not already downloaded Random's System Information Tool (RSIT), please download Random's System Information Tool (RSIT) by random/random which includes a HijackThis log and save it to your desktop. If you have RSIT already on your computer, please run it again. Double click on RSIT.exe to run RSIT. Click Continue at the disclaimer screen. Please post the contents of log.txt. Thank you for your patience.Please see Preparation Guide for use before posting about your potential Malware problem. If you have already posted this log at another forum or if you decide to seek help at another forum, please let us know. There is a shortage of helpers and taking the time of two volunteer helpers means that someone else may not be helped. Please post your HijackThis log as a reply to this thread and not as an attachment. I am always leery of opening attachments so I always request that HijackThis logs are to be posted as a reply to the thread. I do not think that you are attaching anything scary but others may do so. While we are working on your HijackThis log, please: Reply to this thread; do not start another! Do not make any changes on your computer during the cleaning process or download/add programs on your computer unless instructed to do so. Do not run any other tool until ... Read more

Read other 2 answers
RELEVANCY SCORE 92.8

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-
http://img600.imageshack.us/img600/2219/cmoslocation.png

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
RELEVANCY SCORE 80

Can any one help please? Where will the CMOS/Clock battery be found on a Toshiba Laptop? We have tried all the "hatches" on the bottom and have asked local dealers to no avail. Have replacement battery - but don't know where to put it!
 

A:CMOS/Clock battery

It's under the keyboard, flip the laptop over the screws to release the keyboard are marked with a K for more detail look in the user manual.
 

Read other 2 answers
RELEVANCY SCORE 78.4

Does anyone know what number battery,goes in my Laptop,and where I can get one??????????????????????
Ive contacted HP by phone,they went into there supply room,dont know the number or battery type that goes into this Laptop.
Ive made inquiries at verious computor stores,and Technicians,for the past month,nobody knows the answer
 

A:CMOS Clock Battery-HP Laptop Ze4910us

Here is what they call for the battery

371785-001
Battery (Primary) - 6-cell lithium-ion (Li-Ion), 11.1VDC, 4.4Ah, 48Wh
REQUIRES RETURN OF DEFECTIVE PART
371785-001N New part for 371785-001

http://partsurfer.hp.com/cgi-bin/sp...callingsite=&strsrch=&keysel=Battery&catsel=?
 

Read other 2 answers
RELEVANCY SCORE 77.6

I went to a client's home today to replace the CMOS battery in her old Dell XP machine. Should have been a 15 minute job tops. When i rebooted the computer all was fine,but could not get online. I looked at the clock(lower right hand corner) because everytime I opened the browser(any Browser) I got an error message saying to set the clock. Well-I did,I thought. Reset the BIOS to default,and still no internet connection.
 
After about 30 minutes of trying to figure out what was wrong,I looked at the clock again-and it was set to the wrong year. Reset the clock and BANG! everything worked perfectly! I know it's been a while since I worked on an XP machine- but I don't ever remember that happening or why?????

A:XP CMOS battery replacement- clock setting heads up!

Large time discrepancies can flag things like security issues, so it's probably going to be down to something like this rather than anything in XP itself.
 
For example if you have an internet security suite that does look-ahead to destination websites, all the security certificates can seem to be invalid if the system date is way off.

Read other 8 answers
RELEVANCY SCORE 74.4

Hey everyone! Hopefully someone can help me. I've been having this problem for maybe 2 months now 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. Any ideas?
Thanks

A:Dell Inspiron 17 7737 - Still getting real time clock error after replacing cmos battery

If the system is in warranty, call Dell for replacement of the reserve battery.
If it's out of warranty, try replacing the battery yourself (it's a CR-2032 button cell).  Manual is linked below.  If that doesn't solve the problem, the clock chip has failed and the mainboard will need to be replaced.
ftp.dell.com/.../inspiron-17-7737_Owner%27s%20Manual_en-us.pdf

Read other 3 answers
RELEVANCY SCORE 69.6

I found an old PC (Progen) in trash that didn't come with hard drive and CD-Rom, but when first try to startup it can go to BIOS. (it has about 32 MB RAM)
Because BIOS has password protected, I try to reset the password by removing CMOS battery and wait for about 24 hours then install back the battery.
The problem now the PC can't go through BIOS, the fan is spinning and green light is on but no beep sound.
Don't know if the battery problem or the mobo already dead
Thanks for any help
 

A:PC won't go to BIOS, after removing CMOS battery

CMOS only retains BIOS settings for a few seconds after the battery is removed. 24 hours is just insane overkill.

Also, on most semi-modern machines, the password isn't stored in volatile memory and as such will never be "reset" using that method - There will be a jumper on the motherboard to specifically erase the password. You should search for that motherboard on the internet and fine the manual for it.

As for the machine not POST'ing anymore, I would suggest that you moved a jumper or that something is not seated right. Double-check that the ram, cpu, video card, any other peripherals, cables, and battery are all seated properly. If in doubt, remove them and re-seat them. Find the manual for that motherboard online and go through it, checking all the jumpers on the motherboard to make sure they are in the correct positions.
 

Read other 4 answers
RELEVANCY SCORE 69.6

I've seen a few problems like mine on the boards but never a satisfactory resolution. My problem started with a frozen screen. I did have a few windows open and i was listening to music and surfing at the time. Upon restart case light came on, M/B power light came on, fans on psu, cpu and graphics card all spun up as well as hard drive, but no post beep. Long story short is that I have done everything recommended on various forums, like resetting the Cmos via the jumpers, taking out the CMOS battery, leaving the CMOS battery out overnight, new CMOS battery, changing the PSU etc. and am now at the stage where I have the M/B stripped out of the case on the workbench with just the psu, one stick of memory, Graphics card, Hard drive, mouse and keyboard. Strange thing is computer WILL post with default Bios settings when CMOS battery removed, go through bios setup routine, launch Windows and run perfectly normally. But as soon as I put the battery back, nothing, no post beep, nothing, just spinning fans and no display. Has the Bios Chip got corrupted? The battery clip does look firmly soldered to the M/B and is not bent. I am at a loss. Can't RMA the M/B as its an Ebay job. All the Caps look sound. Is it worth replacing the BIOS chip as they're fairly cheap or is the M/B toast?? Does anyone know anything elseI can try??

System is:

Motherboard: ASUS A8N-E
Bios: Phoenix Tech. Ltd AWARD BIOS ACPI rev.1013
PSU: CIT 750W ATX Power Supply
CPU: Athlon64 3500+
Graphics ... Read more

A:CMOS battery/BIOS problem

Read other 7 answers
RELEVANCY SCORE 68.8

i have a refurbished MSI K7N2 Delta-L mobo, got it from newegg, so i guess that would explain why...
every time i completely unplug my pc from the wall, i get the "cmos checksum error- defaults loaded, press F1 to continue". i thought it was just a bad cmos battery, but after having replaced it 4 times now with new ones, i don't think that's it anymore. i know i am installing the battery correctly, and the jumper cap is in the correct position, i have checked and rechecked the manual to be sure. is this maybe just due to a little bad wiring somewhere on the mobo?
 

A:CMOS battery will not hold Bios settings

Read other 13 answers
RELEVANCY SCORE 68

Hi folks!

I have a question. Will BIOS gets corrupted if CMOS battery is left dead for a while? The reason I ask is because I bought a P4 mobo from vendor and it is an non-retailer box. Apparently when I receive the mobo, I tested the CMOS battery is dead and when I put everything together, there is no POST or beep at all coming from the mobo but power light and fan are on. Any idea?

I suspect the BIOS is corrupted because the baterry is left dead for too long. Is my theory correct? Please advice. Thanks.
 

A:Will BIOS gone if CMOS battery is left till it's dead

"I suspect the BIOS is corrupted because the baterry is left dead for too long. Is my theory correct?"...

I would say yes. This doesn't happen all the time, but in your case, after a new battery was installed, no POST is a bad sign... Did you try resetting the CMOS by moving a motherboard jumper? Is the CPU and memory supported by the motherboards model? Was the CMOS battery totally dead or did it show some DC voltage?

I just repaired a Compaq desktop computer that was built in September 1999. It had an AMD K6 550MHz CPU. The CMOS battery was bad, but it still showed 1.3 volts DC. It should have been 3.0 volts. A new battery brought this old baby back to life
 

Read other 8 answers
RELEVANCY SCORE 68

I have a Compaq Presario 2200 model laptop.

I have an issue where every time by laptop batter discharges the time clock resets. I believe that this is realated to the bios battery. I have taken the laptop appart properly via guide provided on compaq website. This is the maintenance guide with all the spare part numbers listed. However, this laptop is out of warranty.

My problem is that I cannot locate the bios battery anywhere on the board. Could someone with some experience pleae review the diagram for this model and tell me where the battery is?


Thanks,
Darmin
 

A:Presario 2200 Compaq - CMOS/BIOS battery?

First of all.

Have you tried to calibrate the battery by BIOS? < This might help a lot of problems.

Second

Have you updated your BIOS ?
 

Read other 2 answers
RELEVANCY SCORE 68

If the CMOS battery for the BIOS becomes dead, and it is not replaced with a new battery, what are the not so good effects beyond the day and date system clock ? Will it keep the default BIOS settings in the CMOS for a long time without a good battery ? I did replace my 2006 Gateway battery mainly for the day/ date and to be able to change boot device order.
 

A:Solved: the CMOS battery for the BIOS general question

It will revert to the factory CMOS settings which of course include date and time. You would have to reset all of your BIOS Settings such as boot order, Drive recognition and such each time you booted up. But as far as permanent damage you won't have any just because the Battery was dead, unless the battery also started leaking, not likely with the coin cell batteries.
 

Read other 2 answers
RELEVANCY SCORE 68

And old Windows problem has finally reared its ugly head on my system: "clock drift". My Windows clock keeps losing time. About 1 minute by the end of the day.

My CMOS clock is fine and is NOT losing time. I shut my PC off at night, automatically correcting the Windows clock when I restart the next morning. But my scheduled tasks later in the day will start late as the Windows clock slowly loses time.

I've edited the Registry to update "Internet Time" daily instead of weekly, but the time of day that the clock updates fluctuates, sometimes updating in the morning (which is unhelpful.)

"Clock drift" is a problem that has been around since Windows-3.0. As the number of background tasks grows, the software clock has a tendency to lose time.

Since my CMOS clock is just fine and and polling the Internet NTS (Network Time Server) sometimes fails (about 15% of the time), I was wondering if there was a simple way to automatically resync the Windows clock with my CMOS clock?

TIA.

A:Clock Drift driving me nuts. Any way to sync to CMOS clock?

Here's a link to a constantly updated list of NIST servers.

NIST Internet Time Service

If you search for your existing host in Regedit and substitute one from my list for the preset one you should also stumble upon a registry setting to increase the frequency of synchronisation.

It goes without saying you should back up your registry first, as a safety precaution

Read other 9 answers
RELEVANCY SCORE 67.6

Hi All,
i need to change a CMOS Battery on my Laptop Latitude E6400, you can help me how to buy it?

BR
Renato

A:How to Order Part CMOS BIOS Battery Latitude E6400

Hi ekeste,
We can help you order provided parts are available for the system model please share the service tag of the system  .
For me to better assist in troubleshooting, please click my DELL-username and send me a Private Message with the Dell Service Tag number and your email address.

Read other 3 answers
RELEVANCY SCORE 67.6

Ok, so I bought a HP Mini Notebook for my wife. Model: 1035NR
Everything was working fine. She goes to boot it yesterday and she gets hit with a password right after the AMI bios screen. She asked me if I set the PW, I told her no and she said she didn't either.

No big deal. I take it apart and unplug the CMOS battery for about 20 minutes.
Hold the power button down for a bit to discharge any left over juice. Put it all back together and same thing.

So I tried to leave it out for over 12 hours and the same thing.
I even tried various AMI master passwords (I knew it wouldnt work, but you know how desperate we get). So now I'm stuck.

I googled it today and found various information.
Most leading me to believe I am stuck with a paperweight or will have to send it to HP to have it fixed which will run me almost what I paid for it.

So am I missing something here? Anything else I can do?
Thanks guys!
 

A:BIOS password. Unplugging CMOS battery doesn't work.

Well I can tell you that removing the battery will NOT clear a pw on a laptop. This is a security feature. Next we do not assist with pw help. This thread is now closed.
 

Read other 1 answers
RELEVANCY SCORE 67.6

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
RELEVANCY SCORE 66.8

So I have a machine I have just replaced the mobo on for someone but everytime it is unplugged from the wall upon reboot a message appears during post saying default values have been loaded and you have to press F1 to enter setup (bios) or F2 to continue.
I thought this was no big problem and swiftly replaced the CMOS battery but it is exactly the same, resets everytime power is cut
The board is an MSI B75MA-P45 and is brand new
Thankfully the default sata mode is AHCI so the machine still boots after reset but its really annoying me and the clock resetting stops WU from working and also threw a temp activation problem that was easily dealt with.

HWinfo does not show VBatt reading and speedfan does but reports 4.08V which is clearly wrong from a 3V battery

Any thoughts/ideas would be gratefully received as im running out of options other than an RMA which is going to be a major pain as this is her only computer and cant be without it

A:BIOS resets everytime power is unplugged cmos battery replaced

Just some thoughts.

***Why was the motherboard replaced??***

1. Is their a default jumper pin on the motherboard that is in the wrong position.
2. I have seen a power supply cause this problem.
3. Lately HWmonitor for other members has been giving wrong readings.
4. It has been know that a infection will monkey with the time so one can't get help on line.

Read other 9 answers
RELEVANCY SCORE 66

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft® Windows Vista™ Home Basic, Service Pack 2, 32 bit
Processor: Genuine Intel(R) CPU T2080 @ 1.73GHz, x86 Family 6 Model 14 Stepping 12
Processor Count: 2
RAM: 1917 Mb
Graphics Card: ATI RADEON XPRESS 200M Series, 4 Mb
Hard Drives: C: Total - 112971 MB, Free - 57687 MB;
Motherboard: TOSHIBA, IAYAA
Antivirus: McAfee Anti-Virus and Anti-Spyware, Updated and Enabled

Hi:

My CMOS battery is dead and I've yet to open and replace. I keep the time set correctly manually. Would this cause the computer to operate as if in slow motion?

I've run several CPU speed checks and all report over double the 1.73 GHz, sometimes as high as 2.8 GHz.

Any and all advice or comments will be appreciated.

Thanks, Robert
 

A:Will a dead CMOS battery slow computer?

Read other 16 answers
RELEVANCY SCORE 61.6

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.
 
Xen

Read other 1 answers
RELEVANCY SCORE 61.2

I have old Tecra R10-10W

Aftert long time in the cabinet, it say CMOS battery error and after charging can I not startup on the old system (bios) password.

How to reset the bios password and is also required replacement cmos battery and I can do it myself?

Thank...

A:Tecra R10-10W - CMOS battery error and next bios password error

you can change cmos battery your self np,for bios pasword use google,i havet a hp mini with same problem and foundet a program that have reset with the help off error code when inserted wrong password 3 times in the row,then i used error code in the program and got password,restarted hp and inserted password now is working bp.Do i have also a old tecra and have difrend problem with it,evrithing sims to be in order but laptop wont start in first tray,after several restarsts shovs startup screen,then runing bp,if restarted again same story,needs several restarts and then is runing again,trayed with outside monitor same thing,any ideas?
here is the link for your problem and sulution: http://dogber1.blogspot.com/2009/05/table-of-reverse-engineered-bios.html

Read other 1 answers
RELEVANCY SCORE 58

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
RELEVANCY SCORE 57.2

I have a Toshiba Satellite m45-s265 that has lost its clock power. I must reset time and date whenever I remove tne main battary.
The manual says to take it to a service man. I would like to replace it myself but cant find it or dont recognise it. I have removed all the small compartment covers but see no battary. Can anyone help?
 

A:replace clock/cmos battary in toshiba lap top

If it's like my Toshiba, it's under the keyboard. check this site, your model wasn't listed but you can get some disassembly instructions here.
http://repair4laptop.org/notebook.html
 

Read other 1 answers
RELEVANCY SCORE 57.2

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
RELEVANCY SCORE 57.2

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
RELEVANCY SCORE 54

Hello,
A week or two ago, I started seeing a pop-up appear on my Inspiron screen (I run Windows 8). The pop-up said that the AC adapter was not recognized, and therefore, the battery would not charge. It was the same 65W adapter that came with the laptop. I hit F2 at startup to check the BIOS, and it said the adapter wasn't recognized. I decided to order a new adapter. While I waited for it to arrive, the battery gradually drained down, but the laptop continued to work while plugged in.
The new adapter came today, an official Dell adapter. I plugged it in... Same error message. Adapter not recognized.
I ran a check on the battery; the system says the battery is fine. I pulled the battery, and the laptop still worked via the adapter. I jiggled and checked all the connections. Couldn't find an issue and couldn't make it work.
I checked the BIOS version and date, and it's from 2013. Time for an update! I downloaded the latest version, but here's the problem: It won't install without the battery sitting at at least a 10% charge. The battery, of course, won't charge with either adapter (it's reading at 1% now). So I can't update the BIOS without some battery life, but I can't make it recognize the adapter and charge the battery without the updated BIOS (assuming that's even the problem, but I'm hopeful that's all it is).
If anyone has any suggestions for how I might make this work, I would very much appreciate it! Thank you!!!

A:Catch-22: No BIOS updated without battery, no battery life without BIOS update...

Please list Dell model number and version of windows. Ex: Dell Inspiron 3543, windows 10
If you don't know, type msinfo32 onto the search box, and then look for System model.....
In the meantime, please check the USB port, where the AC adapter is plugged into system, is loose. You could also wiggle the Adapter's end while checking it in the BIOS to see if the Adapter's type appears.  

Read other 4 answers
RELEVANCY SCORE 52

wheres the lenovo ideapad y530 cmos battery located? anyone pls help. TY. i plan to reset my corrupt bios.
 

A:Cmos battery?

Anyone here who knows the location of cmos batt of lenovo ideapad y530.
 

Read other 1 answers
RELEVANCY SCORE 52

could someone tell me where the cmos batter is in a dell inspiron 3800
 

A:cmos battery

Welcome to TechSpot! Hope you'll love this place as much as I do.

If you haven't already done it, then open up your case and look around on the motherboard for a shiny round thing that's about 1.5cm in diameter, pull it out off it's socket and there you go.
It should be near your PCI-ports or near your CMOS-jumper.
 

Read other 6 answers
RELEVANCY SCORE 52

I HAVE A ACER ASPIRE LAPTOP 7551-3068,  FIRST IT WOULDNT POWER UP SO i CHANGED THE EXTERNAL BATTERY AND THE POWER SUPPLY CORD. NOW IT POWERS UP BUT IT BLINKS AT THE BEGINNING OF THE WINDOWS STATUP AND IT TAKES A LONG TIME TO BOOT UP. ON SEVERAL SITES IT SAYS TO CHANGE THE CMOS BATTERY, WHERE IS THIS LOCATED?

Read other answers
RELEVANCY SCORE 52
RELEVANCY SCORE 52

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
RELEVANCY SCORE 52

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.











Solved!
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
RELEVANCY SCORE 52

Laptop is over seven yers old and is giving messages suggesting CMOS battery needs replacing. Considering it's age what would the battery look like. I have no mannual. I havn't got to see the whole motherbourd yet but can see this much. Is it there?


 

A:can you see cmos battery

Make and model may help someone to help you...
 

Read other 2 answers
RELEVANCY SCORE 52

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
RELEVANCY SCORE 52

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

Read other answers
RELEVANCY SCORE 52

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.

TiA

T.
 

A:CMOS Battery.... perhaps ?

Read other 7 answers
RELEVANCY SCORE 52

dos this battery affect the laptops ability to boot to normal operating screen?

A:CMOS battery

Hi,Complementary metal-oxide-semiconductor (CMOS) or Real-time clock (RTC) battery keeps the date and time on your PC, power basic input-output system (BIOS) settings.BIOS settings control things such as loading your operating system, managing system memory and operating the keyboard.RegardsVisruth

Read other 1 answers
RELEVANCY SCORE 52

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
RELEVANCY SCORE 52

Hi,
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?

Thanks

Joaquin.
 

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
RELEVANCY SCORE 52

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
RELEVANCY SCORE 52

My CPU clock was messing up constintly on my so I wanted to change out the battery. I did that with no difficulty. When I restarted my computer all that happined was that it beeped at me the code was.. 2 quick then 9. My computer is know a fancy paper weight I can't even boot from a disk, cd or floppy)There is no signal going to the monitor I have a Matsonic Ms6260s motherboard.
Help!!
 

A:CMOS battery

Read other 9 answers
RELEVANCY SCORE 52

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
RELEVANCY SCORE 52

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

Bob
 

Read other answers
RELEVANCY SCORE 52

Wife has a compaq S4100NX that on more than one occasion has lost the tiem by one hr.(went backwards). So I started looking for a cmos battery and MUCH to my surprise, there isn't one on the MB. I thought all MB's has a cmos battery ????

Any different idea(s) on why it looses time ?
 

A:No CMOS battery ?

Read other 6 answers
RELEVANCY SCORE 52

I do not see a Cmos battery obviously its there somewhere, If it doesn't look like a large watch battery what else does it look like, I see nothing that can be popped off and replaced.
 

A:Cmos Battery??

Some older motherboards had a barrel shaped, blue backup battery soldered to the motherboard. That was common with 486 systems. In order to replace it, you were required to attach an external battery to a specific connector on the motherboard and set a jumper (maybe) to disable the original battery.
Another possibility is a CMOS ram chip with the battery built into it. Those usually were a large black chip plugged into a socket on the motherboard with "DALLAS SEMICONDUCTOR" printed on it.
 

Read other 1 answers