EVERY TIME I TOOK OFF THE POWER CABLE MY COMP. GO BACK TO THE DEFAULT SETTING WHICH MEAN THE PRODUCTION DATE AND OTHER DEFUALT SETTING WHICH MAKE MY HAVE TO ENTER THE BIOS AND ENTER THE DATE OF THE DAY AND YEAR AND OTHER BIOS CONF. KNOW WHAT CAN I DO!!??? AND THANKS.
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Some laptop BIOS can be restored to the factory defaults in the BIOS setting - Default setting. If your BIOS does not have this option then remove the BIOS battery for 20 or more mins. When you replace the BIOS battery the BIOS will be RESET then go into the BIOS setting scroll to Date & Time to set the current date and time.
IF YOU ARE TALKING ABOUT BIOS
YOU CAN SET IT TO THE FACTORY DEFUALT
BUT IF YOU TALKING ABOUT WINDOWS YOU CANT ..ONLY YOU CAN MAKE SYSTEM RESTORE FOR LAST TIME AND DATE.
SO IF YOU TALLKING ABOUT WINDOWS YOU NEED TO RE INSTALL WINDOWS AGAIN AFTER YOU SAVE YOUR DATA AND FILES. AND MAKE A FORMAT BEFOR YOU INSTALL.
There are two ways you can restore the CMOS/BIOS back to the factory default.
First, turn off the laptop and remove the BIOS battery for 15 mins.
Insert the BIOS battery back again and go into the BIOS configuration to set the Date and Time etc.
Second, go into the BIOS configuration press the f1 or F2 or F10 key (not sure which key for your model DELL). When you get into the BIOS then there is a setting to restore the BIOS to the default, then save setting and exit.
To reset the BIOS back to the default settings.
It maybe possible to go into the BIOS and there maybe a setting to select to restore the default settings.
The other way is to remove the BIOS battery and the main battery, wait for 30+secs then insert the batteries and power up, then go into the BIOS setting and configure the Date and Time settings.
The 161 CMOS error means the CMOS/BIOS battery is dead/flat and needs to be replaced.
The 163 CMOS error means the Date and Time could not be updated when you change the Date and Time setting. This is caused by the flat CMOS/BIOS battery.
When you replace the battery with a new one, the BIOS will go back to the default settings, go into to BIOS setting (press F2 when you boot up) and change the Date and Time, then save and exit.
The BIOS battery maybe under one of the panels on the bottom of the laptop or under the keyboard.
To reset the BIOS ack to the default settings, go into the BIOS configuration and look at the various configurations, usually there is a setting to load the Default settings, then save and exit, and this would not change the Date & Time setting.
The other way to set the BIOS default setting is to remove the BIOS battery (it is probably a lithium 3volt button battery), wait 1/2 hour and replace the battery, the go into the BIOS configuration and set the Date & Time setting etc.
You can reset the BIOS back to the default setting by going into the BIOS configuration and there should be a setting "Load default settings" then save and exit.
The other way to reset the BIOS is to remove the BIOS battery, wait 1/2 hour, insert the battery, then go into the BIOS configuration and set the Date & Time etc.
That's the 2nd time i hear that kind of problem. Your mboard battery is new, and you did not press "f1" at first start.
so i guess , the cmos time is not change, try go to the bios setup and load "bios setup default." after that change the time setting on the bios. please find time setting and set it with a current ime in your area. after setting press 'F10" to save and exit the setting, the system will restart.