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What can cause the cmos configuration info to be lost and time and date wrong?
Wiki User
∙ 15y ago
Dead CMOS battery, a virus or a motherboard going bad.
Wiki User
∙ 15y ago
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You boot a notebook and discover that CMOS setup has lost configuration information or that the date and time are wrong What could be the most likely reason for this?
Most likely the small battery inside the case that powers CMOS RAM needs replacing.
What type of data does a CMOS chips hold?
date and time is one of them it also stores settings about drivers on the computer
What are the use of battery?
CMOS battery of your laptop maintains hard disk, time and date, and other drivers and configuration settings in a CMOS memory. You will see these tiny CMOS batteries connected directly to the laptop’s motherboard.
Where is the system date and time stored in the hard drive?
In the CMOS. System CMOS Date/Time is stored in the configuration settings in memory timing to be used by BIOS upon startup. RAM located on the motherboard must have continuous power to maintain the data (Date/Time). When time begins to read slowly or fails to keep up with current time it is a significant clue that the battery for CMOS is fading or may be dead and should be replaced.
The CMOS configuration chip does what?
it contains a small amount of memory, or RAM, enough to configuration or setup information about the computer. This chip is responsible for remembering the current date and time, which hard drives and floppy drives are present, how the serial and parallel are configured and so forth. When the computer is first turned on, it looks to this CMOS chip to find out what hardware it should expect to find.
What happens to the system if there is no internal battery in the motherboard?
CMOS (complementary metal-oxide-semiconductor) usually describes a small amount of memory on a computer motherboard that stores the BIOS settings. Powered by a small battery, the CMOS also stores time and date details, etc. If the time and date on the computer is wrong whenever the computer is booted up, then a failing CMOS battery is a likely cause - and needs to be replaced. If there wasn't a CMOS battery, or it is a dud, mains power could possibly (as happened on an old laptop of mine, so time ago!) be used to run the computer, but time and date will need to be updated manually on each reboot.
Which chip acts as a clock to keep the current date and time?
CMOS Chip
Why does a computer need a battery?
CMOS battery of your laptop maintains hard disk, time and date, and other drivers and configuration settings in a CMOS memory. You will see these tiny CMOS batteries connected directly to the laptop’s motherboard.
Why do you have to have CMOS settings?
The CMOS remembers the time and date settings of the computer, and also remembers the Hardware settings.
How does CMOS battery works in personal computer?
All AT computers (80286 processor) or later require a small battery on the system board that provides power to the Complementary Metal Oxide Semiconductor (CMOS) chip, even while the computer is turned off. This chip contains information about the system configuration (e.g., hard disk type, floppy drive types, date and time, and the order in which the computer will look for bootable disks). The CMOS battery allows the CMOS to preserve these settings.
Where the system date and time is stored?
it should be there in bios..
Why your desktop will not keep time and date?
change your mother board cmos battery and set Time and date
