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Re: unable to save date in m/b bios
Make sure your using new cmos battery not yet been use and then set date in your bios and save it after finish. still doesn't work? try update your cmos that migth be the problem note! remember always take care of the risk on updating flashing cmos on power interuption never power off if still flashing. or if you update and flush it before it might be a bad flash of your cmos try bring it up to early state or restore your backup cmos firmware or download it to its main manufacture
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hi if you have a member of your family or if you know what you are doing then go for it. "* PLEASE TURN OFF AND UNPLUG ALL POWER SOURCES (Battery and Power outlet) *" remove the back cover of your laptop and remove every screw to get to the BIOS/ CMOS Battery. Simply remove BIOS/ CMOS battery on mother board. first on the bottom of the laptop there is a large cover plastic thing. unscrew that and a small circle battery will be there, take out battery. secondly: plug in battery or mains then, go on to the bios and add a password. last: once added, save exit then go back on bios page , insert the CPU battery and then save and exit turn off laptop wait 30 seconds switch back on go on bios and it should be done.u may need to insert date and timeXD ( PLEASE NOT THIS IN NOT 100% effective some laptops BIOS chip need to be replaced)
If your cmos battery is new and the date and time not change. Try the following.
1. Clean the cmos battery terminals.
2. Check your mother board if there is bulges capacitor.
3. Check the memory you have using if in the same voltage requirements.
Hope this will help to you.
if you only take 5 to 20 sec you might not lose any bios Cmos settings
im not sure what or why you want to save the settings for
once the Cmos battery has been removed for more than 30 - 60 sec your cmos settings will be restored which means no password and failsafe defaults
you could just restore failsafe or optimised defaults if you lose any Cmos settings
you will need to reset the password and the time and date
Restart your computer During the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS using the arrow keys load failsafe defaultsor load optimized defaults press escape then press f10 to save to cmos to restart
The Checksum error basically shows that boot settings which were previously set has been changed or reset. This usually happens when the battery loses its charge and thus fail to retain the CMOS settings. This can also be caused by a power surge or a damaged motherboard. But most of the times it would be the battery problem.
You can try replacing the CMOS battery and enter the values back into CMOS or reset values to default. Then switch off and boot up again.
Hope this works. Good Luck.
All mother board has a CMOS, complementary metal oxide semiconductor, battery. The main purpose for the CMOS battery is to store the system time, date and bios settings even if the computer is turned off or the main battery dies. Turn off the computer (laptop) unplug it. Remove the Phillips screws that secure the motherboard cover then release the cover from the clips on the bottom of the plastic casing. Lay the cover aside then locate the CMOS battery cable on the right side of the motherboard. Unplug the cable then remove the battery. After a few minutes plug the CMOS battery into the motherboard... Replace the screws then turn the computer (laptop) back over. The CMOS battery is unplugged for more than a few minutes your BIOS will be reset to the default manufacturer settings. (Password removed) now you can set new password for your bios..
This error comes when there is low cmos voltage so motherboard flash memory forgot the bios settings. For that open cpu and then pull cmos cell from mother board buy new cmos cell and replaced it. Then when you power up the computer press F1 or F2 or "del" key to enter in bios and set time and date and boot option in bios then save settings. Then it works again if it not works then you need to update firmware for your bios . Let me know if you need further assistance. Thanks for using FixYa.
BIOS Loses Date and Time (or Changed Settings Not Saved) A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the voltage of the CMOS battery drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. If you find that date and time is incorrect or if you make BIOS setting changes but they are not saved, replace the battery with an equivalent one.
Risk of explosion if the battery is replaced with an incorrect type. Batteries should be recycled where possible. Disposal of used batteries must be in accordance with local environmental regulations.
To replace the battery, follow these steps:
Turn off all peripheral devices connected to the computer. Disconnect the computer’s power cord from the AC power source (wall outlet or power adapter).
Remove the computer cover.
Locate the battery on the board.
With a medium flat-bladed screwdriver, gently pry the battery free from its connector. Note the orientation of the “+” and “-” on the battery.
Install the new battery in the connector, orienting the “+” and “-” correctly.
This sounds like your battery may be bad or not locked into place fully. Also on the mother board there is a cmos jumper that is used to clear your bios check to make sure the jumper is set correctly an also inspect the jumper to make sure it will make good contact to the jumper posts. Good luck I hope this helps. Also when you set the time in your bios make sure to exit with f 10 key or whatever the save and exit key is for you bios.
Remove the battery from the mother board. Jumper the CMOS to discharge it. You may want to check you Mother Board manual, to see which jumper it is. Some require you to turn the Mother Board BACK ON for two seconds. (It will NOT come up, just will discharge the CMOS and the battery will NOT be there to replace the energy, so everything is GONE.
You will know if you have done it right, when you boot up again, the BIOS will NOT recognize the hard disk (need to set it up again), the date will be wrong (set it up again also) and the floppy drive will not be recognized (new setup).
But then try your password. It should let you right in then.
Let me know if it works.
PS Make sure you have the right mother board jumpers to discharge the CMOS, YOU CAN DO DAMAGE ALSO, if they are not the right ones.