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BIOS resets everytime power is unplugged cmos battery replaced

Q: BIOS resets everytime power is unplugged cmos battery replaced

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

Preferred Solution: BIOS resets everytime power is unplugged cmos battery replaced

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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.

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This is an annoying problem. When ever I start up the computer it tells me "wrong cmos setting", so I go into the bios, load the defaults, set the date and time, save and exit. The computer boots up into windows xp pro. Everything works fine. If I go [start] [shutdown] [restart] everything works fine. The machine reboots no problem.
If I go [start] [shutdown] [shutdown] the machine shuts down but won't start up again unless I clear the cmos.
Most people would say it's the battery. It's not, I replaced that already. The bios is fresh and up to date.
The strange thing is, after get the machine up and running, if I simply flick the switch on the power supply off the cmos doesn't clear. I turn the switch back on press the power button and away we go.
I'm thinking there is some software messing with the bios when xp shuts down but I haven't been able to find it.
I've done all the msconfig, diagnostic boot, etc.....
The only other thing I've noticed is that Microsoft Security Essentials doesn't start up properly. Uninstalling MSecEs makes no difference. Reinstalling makes no difference.
I have all the proper drivers.
I'm stumped....

Any help would be greatly appreciated.

It's a brand new machine with a fresh install of xp pro.
ECS P67H2-A2 motherboard.
Intel I3-2100 cpu
geforce 6200 pci gpu
4GB ram (single card)

A:CMOS resets on shutdown - ( it's not the battery )

Sometimes a battery is bad right out of the wrapper. Buy one in a different store so you're not drawing from the same supply and make sure it snaps in securely.

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Hi guys. I have recently been given a laptop (Acer Extensa 501t) and yesterday it informed me that the CMOS battery was bad. I did a little poking around on the net and found a service manual to tell me how to pull this thing apart.
So I pulled it apart to replace the battery. All went well until I broke part of the battery holder. But the part I broke could (sort of) be held in place by a little bit of metal (battery connector?).
Anyway, I proceeded with replacing the battery and put everything back together and it all worked well, I reset the time etc and used the internet via usb. But when I turned the laptop off and restarted, it again told me that the CMOS battery was bad.
Question is can I glue the broken part down to the motherboard and what glue can I use?

A:Replaced CMOS battery

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I just replaced my CMOS battery. The system rebooted and all my Windows 10 files are gone, it's created a new drive N: but I couldn't restore from Command line and I have a semi useless Windows 8 in place. Help?

A:Replaced CMOS battery Lost Win 10

The only thing replacing the CMOS battery would do is change your boot settings to default in Bios. Without seeing a screenshot of disk management:
Disk Management - How to Post a Screenshot of - Windows 10 Forums

My guess is that you have two hard drives. You installed Windows 10 on a second hard drive. When you replaced your CMOS battery, the boot settings went back to default, which was to boot from the Windows 8 hard drive. You need to go back into BIOS settings and change the boot order to boot from the Windows 10 hard drive.

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Luckily this isn't my main computer...
About a week and a half ago, I noticed that my system clock was all screwed up, even after syncing it with NIST and Windows. So I gathered that it was the CMOS battery giving me trouble. To be expected for a computer that's about six years old, no worries. So I went out and bought a replacement CR2032 3V battery, shut down the computer and unplugged it. I removed the cover, discharged myself, and removed the old battery and installed the new one the same direction (that's definitely not the problem). 
I turned the computer back on, reset the BIOS to the default factory settings (which I believe they were still set to before), set the boot order to HD first, and Windows ran a CHKDSK on the C drive. Everything looked fine on the CHKDSK, and the computer restarted like normal. Then the hell began.
I got to the login screen and noticed right away that what was previously Shut down Citris Records (name of the computer) was now simply Shut down computer. I figured that was probably normal after changing the battery. I typed my password, windows loaded for about twenty seconds, and then went to my desktop. Now the problems begin. 
First of all, I have nothing on the taskbar other than the clock. Not cool. Also, all of the apps in the Start menu have lost their icons, and all of the subfolders, like Accessories, are empty. The computer is also running slower than death, which is also not norma... Read more

A:Replaced the CMOS battery and everything went wonky

Check to see if your RAM is properly seated.
Try booting into Safe Mode.  Start tapping the F8 key immediately after pressing the start button.
If you can boot into Safe Mode try doing a System Restore to a date prior to replacing the battery.

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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.

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I replaced the CMOS battery in my computer. When I restarted, the computer installed some driver. I now have a F drive which was not there before. It belongs to my Lexmark printer which has a card reader built in.
How can I delete the F disk?

A:replaced CMOS battery, now I have a mystery disk

Hi HAVOC , My Epson shows up the same thing ,I think it's normal

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I have this Presario 1810 that wasn't saving the time, so I opened it up and replaced the CMOS battery, it was one of those tiny 3V li jobs.

Well, the clock now stays, but the video is all messed up. Now when I start it up, it just rolls and rolls, slowly washing out to white.

What happened? I took battery back out, same thing no difference.

What the heck did I do? This thing has no battery, just runs off the power cord.

A:[SOLVED] Replaced CMOS battery in notebook, now Video probs?

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Recently bought a new Inspiron 3541 everytime I boot the laptop makes high pitched series of 5 beep as long as the bios loads. I have replaced the CMOS battery twice and I still get the same effect. If there is a solution please tell me, if none I'll be happy to call it defective.

A:Dell Inspiron 15 3541 keeps beeping 5 times, CMOS battery replaced at least twice.

Hi Insporonist,
Thank you for writing to Dell Community Forum.
Disconnect AC adapter & Notebook Battery and then remove the CMOS, start the laptop once only with the adapter and check if the beeps are observed.
Please update the BIOS to the latest version available on Dell Support site.
Please private message us the service tag of the system.
Kindest Regards,
DELL-Akshatha M
Social Media and Community Professional

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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.

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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?

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I have an older PC which I gave to my mum. It originally ran Vista, but I bought and installed Windows 7 Ultimate around 6 weeks ago after it had been inactive for 3/4 months. It was running great, but a couple of weeks ago it just started hanging for no real reason. Also, at startup it would say that the computer had not been shut down properly, even if it had. This was only when it was switched off at the wall, not after a restart or when the PC was left plugged in and switched on. She only uses the PC to look at You Tube and some webcams from her grandkids, and that's it, she's not very computer literate.

Initially, I left Windows repair to run overnight, but when I looked at it the following morning it was still in the repair screen, so I assume it had hung. I spoke to a local repair shop and they suggested I test the RAM, test the hard drive, and replace the CMOS battery. The RAM and hard drive checks went without any errors and after I replaced the battery the hanging stopped. I played with the computer all evening and shut it down as normal and switched it off at the wall. Next day I thought I would start it up just to check it and I was faced with a "cmos checksum error - defaults loaded" message. I thought that was strange, but maybe the battery was dead, so I swapped it over with one from my perfectly working desktop to try it out, and my desktop worked fine, but after shutting down my mum's one it had the same problem when power was p... Read more

A:"cmos checksum error - defaults loaded" after battery replaced

I must add that the PC is the same as when I bought it new from the shop, except for adding a Creative Labs sound card (approx 2012) and installing Windows 7 (around 6 weeks ago). All Windows updates are downloaded and installed.

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Hello friends :-)

I just bought new Toshiba Satellite L-50-B (Skullcandy) laptop. After couple of days I read on internet if I want to save my battery I just need to remove it and work on AC power. I did that. My battery is attached with two screws. When my battery is removed I noticed one problem, my BIOS time is resetting every time I turn off the laptop. When I put the battery back, time is not resetting.
I tough maybe it was a CMOS battery? What do you think? I open it and I could not find the CMOS battery?????

Another question, why the battery is attached with two screws? I was wondering, maybe she is not meant to be deattached?

A:Satellite L50-B - time/date within BIOS resets without battery

did you get anywhere with this? I have the same problem.

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Hi! I wonder if anyone can help me with this as I have no idea what could be causing this. I have played with it so much I can be fairly precise about its behaviour so please excuse me if I overdo it on the description.

I have a Samsung RC-520 (less than a year old) which resets the time and date back to oct 2011 00:00 when rebooted. This only occurs if its been of for more than 5 seconds, any less and it remembers. I immediately assumed a dead BIOS battery was to blame and because the customer wrongly lead me to believe it was within warranty I dissasembled the laptop and replaced it. This did not solve the problem.

So here are the other things I have tried:

Reset BIOS back to default.
Updated to 'Firmware' via windows installer.
Replaced hard drive, ram and removed optical drive (clutching straws )
Tried with battery out / without mains power.
Reset the time in Windows 7

Here are some things I have noticed:
To test whether or not the BIOS was resetting I changed the lower 3 boot orders from 4:USB FDD, 5:USB HDD, 6:NETWORK to 4:NETWORK, 5:USB FDD, 6:USB HDD. This does not change, so as far as I know, only the time and date do.
If the time/date reset (laptop off for more than 5 secs) then the laptop does not start properly 1st time. Instead I get a blank screen and the power led lights and that's it for 15 secs. After that the power button led comes on and I hear the optical drive engage but still nothing on screen. So then I have to hold the pow... Read more

A:Samsung laptop date/time resets - not bios battery!

if i recall removing the battery and leaving it for 15-30 min does a hard reset or some such.

odd behaviour indeed though, have you checked for root kits?

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I have a newer PC and trying to diagnose the problem. It was working fine for four months. I have had it turned off for nearly two months due to traveling and other activities. I powered it up and the Power Supply fan operates...the CPU fan operates...but that is it. Will not boot up. The hard drive light is a constant yellow (I know not all PCs have a light like this).

I switched out hard drives....same results. I've checked all connections but no help.

I hate to think a motherboard went bad on this thing.

Any help greatly appreciated!!!!


A:CMOS Battery or Power Supply or Something Else?

Try to reseat the processor, vid card, and memory. If all else fails take out everything but the processor, memory, and vid card and try to boot it with a startup disk

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Just got a replacement laptop from eBay. (Hehe, I know) It doesn't power on, or rather I here something but not the normal grind of a laptop turning on. I've heard it might be the CMOS battery, and if this is the case, where is it located on a Trek Transport II ?


A:Comp won't power on - CMOS Battery?

I do not think that it is the CMOS battery.

If the battery and Power Brick are not Kaput, you have some other more serious problem. I would not 'hehe' just yet.

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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

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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.

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I currently have a samsung Q70 laptop, only a year and a half old. The other day I turned, and the power switch was illuminated with the battery led on as well, but the screen just stayed blank, won't even go to the boot screen. So I disconnect the AC power, take out the battery, hold down the power button to relase any internal energy, and put the battery back on, and its working!

However, the next morning the same problem occured, so I did the same thing again, but with no result. So not knowing much on computers I take it to my local computer shop, whp diagnose the problem that the BIOS battery was down or exhausted, so they replaced, but the same problem still happens, it just wont turn on.

I have also tried replacing and testing other memory modules they all seem fine and so does mine in other laptops. Whats worse is that my laptop still has the same problem but it sometimes bleeps 3 times and all my leds flash quick, but there is nothing wrong with my memory or anything else.

Any solutions please?

A:My laptop will not start even though I replaced the BIOS battery

a bios battery would not cause such a fault and any shop that says so is incompetent.
You have a fault either in the power supply or the power regulator internally.
Try another power pack first.

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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

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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. 

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.

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when I turn on the laptop there is a warning that I should push for resum F1 or F2 to enter the bios, as I entered the bios, I set it on then I save and exit the bios, the computer is running normally, I try to turn off my laptop and I try to power up My laptop is still normal, I try to turn off again and then I unplugged my battery and plug the battery again and then I turn on and warning show again, I change cmos with a new one, but the result remains the same.
What should I do to solve this problem? please help me!!!!

A:Bios Setting back to default when laptop battery unplugged

Typically a sign of a faulty CMOS battery. Ensure the "new one" is actually good.

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Sorry for the length as I tried to make this as short as I could while giving what I believe is essential information . Back in late 2005- early 2006 I built a socket 939 system running Windows XP. The case I used was a Thermalrock which was a division of Thermaltake. The case itself was well made but the start button was housed in extremely cheap material and through normal wear broke ever so easily; the case was an expensive mistake. So I was forced to remove the start button from its housing (there was absolutely no way to fix). When this happened the system would not start up when the now unhoused button was engaged. I had to reach around the back, turn off the power supply, turn it back on and then press the power button. It would then start but I had to do this every time.

Three years ago I built an i5 system and the socket 939, with a few exceptions, lay dormant since then (realizing it is almost 10 years old). Last week my dad wants me to build him a system but I decided to see if these parts were serviceable. Besides it would be better than his laptop that runs Vista and at 80 years of age he basically only uses his system to do family research, video streaming, listening to online music and his favorite internet talk shows. So I bought a HAF 912 and I am going to upgrade him to Windows 7 64 (yes, I have installed 4 gigs of RAM).

I migrated everything over to the HAF 912 and here is what I have run into (no I have not upgraded to 7 64 yet):

1. The CMOS ... Read more

A:CMOS Battery, Power Supply, or Something Else Causing Issues?

I would replace the CMOS battery and see if the bios changes are properly saved. If not, the realtime clock chip is probably gone, meaning it is time to upgrade the CPU and motherboard. 939 boards may be extremely rare now

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Here's the specs of my PC.casing: Dell Optiplex 790CPU: i7 2600GPU: Radeon HD 6700Memory: 2x 4GB ddr3Mobo: stock mobo for Dell OptiplexHDD: 1 TB SATA(don't know the brand)PSU: 700 watts genericOS: Windows 7 Pro 64 bitothers are just the basic stock fans/heat sink from Dell Optiplex 790.This PC is more like a hand me down from a friend.I left the PC for about 4 months with no activity since my monitor died and I still don't have money to get one. I recently bought a 32' LED TV to use as the monitor(which i'm now regretting). When I powered it on, I was able to play for around 5 hours until I decided to stop since the TV is starting to hurt my eyes.. Later on when I turned back on the PC, it was still fine and after around 2 hours of playing, it suddenly powers off and I can't turn it back on. I thought maybe the PC is overheated since I haven't replaced the thermal paste for a long time. I bought a thermal paste and replaced it the next day and it still won't power on. Then I decided to replace the CMOS battery and now the PC is working again. I thought that was the end of it but after a few hours of gaming, the PC powers off again, The same thing happened, I can't turn the PC on. I decided to test the CMOS battery if it was discharged but when I test it, it still has some life in it. I placed the CMOS battery back and now the PC turns back on again. I had to change the date and time each time I re-seated the CMOS battery. Again, after playi... Read more

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Hello. I'm new to this forum, and I'm not super experienced, so I hope I'm not overlooking something basic or don't understand something, but here's my question:

I set the "supervisor password" and the "user password" in the BIOS set-up in windows xp professional (pavilion a1010, p4). After turning off the computer and then powering it back up, I am not prompted for the "user password" (which is the power-on password, right?). I am, however, prompted for the "supervisor password", if I try to enter BIOS set-up, indicating to me that the CMOS battery is good. When I do enter BIOS set-up the "supervisor password" and the "user password" are still indicated to be "enabled". Any insights on why my computer is not prompting me for the power-on password would much appreciated. Thank you.

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I just got this intel 845G mobo ... I couldn't get it to power up until I removed the CMOS battery for a few seconds then put it back. Why is that? How do I correct it?

Thank you for your time.

A:Solved: New Mobo must remove CMOS battery to power up

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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

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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?


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.


Have you updated your BIOS ?

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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.

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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!

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


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.

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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.

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I have a Toshiba Satellite Radius 15 P50W-C106 (Intel 5200U, 256GB Toshiba SSD, 8GB DDR3 RAM) that I bought back in November 2015.
I haven't used it very much until September 2016, and have used it on a daily basis (including 2-4 hours on battery) since then. It worked like a dream so far, didn't have any problems.
Today, the laptop does not work on battery at all. It will refuse to power on if unplugged and it will shut itself off immediately if I unplug it while it is on, even though Windows 10 detects the battery and reports it as fully charged. What's even more is that it will lose all BIOS settings everytime it is unplugged, including date and time, which is particularly annoying. For the record, I have last reinstalled Windows 10 back in March 2017, and have done no software changes since then. Also, I have not upgraded the laptop's SSD or RAM or anything else (in fact, I haven't opened it at all).
Fortunately, it's still within warranty and I'll send it in as soon as I can.
Has anybody else had similar issues? Am I to expect a repair, or a replacement?


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Firmware 1.6.0.  With "Switchable Graphics" disabled, laptop LCD will be blank when startup until Windows Login screen.  With this, it is not possible to enter bios, boot selection or command prompt.  The only way to enter bios is to open the back cover and pull coin battery to load default that enable "Switchable Graphics".
This is ridiculous, M6700 & M6800 does not have this issue.  Dell is forcing users to ENABLE "Switchable Graphics" by this way??
Tried with and without "Enable Legacy Bios" still the same.
Windows experience is still normal because the screen shows up at login screen.  Before that everything is blank off.
Is this a firmware issue or purposed feature?

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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.

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I have an old U530, but with a recent SS upgrade it was running like new, until the orange battery light on the side started quickly flashing.  The moment the power plug is removed, the machine loses all power and is turned off.I have replaced the battery.I have replaced the motherboard.I have tested with other chargers to ensure that was not the source of the problem. The issue remains.  What else could cause this? Software/firmware?  Other smaller PCBs? Any help would be greatly appretiated.

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i just bought a asus p5b mb and installed it with a core 2 duo and everything was fine i overclocked a little then the c2d was running hot so i took out the mb took the hs off c2d then put more thermal paste on the put hs back on then put motherboard back in now everytime i boot up it says new cpu installed and when i enter bios and go to save and exit it locks up but remember it worked fine until i took out and put back in also windows xp starts off dark then gets brighter when its loading it also takes like 5 minutes to shutdown this was all fine before taking mb out and cpu out

A:cmos resets every boot asus p5b

Please do not multiple post, it's against the rules.

It would also help if you set out your problem with sentences and punctuation as many people simply don't have the time to read a single unpunctuated monoblock of text.

However, getting back to the problem, be sure that you have not applied too much paste. A VERY thing film is all that is needed, too much can cause problems.

The paste is conductive, so if it runs off the CPU die it can give problems.

Also try removing the CMOS battery for 10 minutes with the PC powered off at the wall. Then reinstall, that should clear the BIOS to defaults, but if the paste has intruded into anywhere it should not have, the BIOS may be detecting the CPU incorrectly.

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I don't use my computer much, I usually let others in the house use it so I don't know much about how it came to this. I've been trying to download a game on my computer that I've heard about but can't seem to. I immediately thought it was because a virus so I went to try and down load a computer Anti-virus program or something. Upon trying to download it, the Internet explorer restarted the second I pressed "save" or "run".
Please help anything would do.

A:Internet Explorer resets everytime i try and download something

Welcome aboard   Download Security Check from here or here and save it to your Desktop. Double-click SecurityCheck.exe Follow the onscreen instructions inside of the black box. A Notepad document should open automatically called checkup.txt; please post the contents of that document.NOTE 1. If one of your security applications (e.g., third-party firewall) requests permission to allow DIG.EXE access the Internet, allow it to do so.NOTE 2. SecurityCheck may produce some false warning(s), so leave the results reading to me.NOTE 3. If you receive UNSUPPORTED OPERATING SYSTEM! ABORTED! message restart computer and Security Check should run Please download Farbar Service Scanner (FSS) and run it on the computer with the issue.Make sure the following options are checked:
Internet ServicesWindows FirewallSystem RestoreSecurity Center/Action CenterWindows UpdateWindows DefenderOther ServicesPress "Scan".It will create a log (FSS.txt) in the same directory the tool is run.Please copy and paste the log to your reply. Please download MiniToolBox and run it.Checkmark following boxes:Report IE Proxy SettingsReport FF Proxy SettingsList content of HostsList IP configurationList Winsock EntriesList last 10 Event Viewer logList Installed ProgramsList Devices (do NOT change any settings here)List Users, Partitions and Memory sizeList Restore PointsClick Go and post the result. Please download Malwarebytes Anti-Malware (MBAM) to your desktop.NOTE. If you already have MBAM 2.0 installed scr... Read more

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Ever since I did a scan on my computer's OS (C) my PC always resets or does some weird thing where its hidden all my applications in random areas. I try resetting it or shutting it down then turning it back on, then I sign in and it pops up with 'Preparing Windows' it happens every time and it changes my desktop background and acts as if its my first time using it... Please respond with help people ?

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Everytime i restart, my homepage resets to some other site.... any idea whats causing this? heres the log

Logfile of HijackThis v1.97.2
Scan saved at 4:28:59 PM, on 10/13/2003
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\Program Files\Trend Micro\PC-cillin 2002\Tmntsrv.exe
C:\Program Files\Trend Micro\PC-cillin 2002\PCCPFW.exe
C:\Program Files\Microsoft Hardware\Mouse\point32.exe
C:\Program Files\Winamp3\winampa.exe
C:\Program Files\Trend Micro\PC-cillin 2002\pccguide.exe
C:\Program Files\Trend Micro\PC-cillin 2002\PCCClient.exe
C:\Program Files\Trend Micro\PC-cillin 2002\Pop3trap.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Creative\SBAudigy\TaskBar\CTLTray.exe
C:\Program Files\Creative\SBAudigy\TaskBar\CTLTask.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Trend Micro\PC-cillin 2002\WebTrap.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\WinRAR\WinRAR.exe

O2 - BHO: (no... Read more

A:IE resets homepage everytime I restart my comp

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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?


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

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I was wondering if anybody knew what to do in a situation like this: I have a 2 year old laptop that is pretty crappy, but it lives. It's cd-rom, external powe4r port, and video port dont work, and the graphics are really red and it ruins gaming. and the wireless internet adapter just went out, so I want to reinstall it, I have a bootable version of the xp install disk on a usb but the bios is way out of date(no usb boot support) and it won't let me flash it on battery power and it doesn't have a floppy version(I have a external floppy drive). so I eather need a way to trick my computer into thinking it's running off of external power, make a flash bios floppy, or get a floppy that boots usb's. PLEASE HELP!,

A:BIOS flashing on battery power

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Hello,After shutting down with my battery around <12% when I next tried to boot my power button flashed 3 times and the laptop failed to power up.  I reset the CMOS and my laptop worked again. However, when ever I shutdown or suspended the laptop the power would reboot and the machine would turn back on by itself a couple of seconds later. I have now updated the BIOS but this did not help, nor did turning off wake up from LAN. I once removed the battery but this resulted in my original issue and I had to reset the CMOS again. Now aftering disabling the battery in BIOS, I am again unable to boot even after plugging in the power cable. This time resetting CMOS has not worked in getting my laptop to boot. Now I am also seeing the keyboard lights for fn, mute and mute mic all lit up even when the battery is removed and the power cable is unplugged.  Can I get it to boot again, given the CMOS trick no longer works? Thank You

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Hi Guys,

I have replaced the battery of my laptop after using it on AC supply for about year after my old battery died.

I get this error message.
"The AC power adapter type cannot be determined
Battery may not charge.
This problem might be solved by:
Connect a Dell 65W AC adapter or higher."

But I am using a 65W Dell Adapter that I got with my laptop.
BTW, I tried the steps for disc AC >> Start>>Uninstall MS ACPI >> Insert battery>> Restart. This process did not yield any favorable results.

Please help!!!

A:Replaced battery on laptop, Battery not taking charge.

If you take the battery out and just use the adapter, will the laptop boot up without errors?

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Black screen after bios update, when power or battery is connected, it power on with black screen. No beep but fan running, DVD drive can open. No display.

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