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CMOS COMPLAIN On every boot time my system shows that GPNV/CMOS CHECK SUM BAD , SYSTEM DATE AND TIME NOT SET, I have changed the battery but still it is showing the same problem

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Bios Eprom issue. Get a new motherboard

Posted on Dec 25, 2008


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Bad check sum cmos


This error is not the same as a CMOS Checksum Error, which refers to corrupted values of the CMOS settings, the ones you set through the BIOS setup program. This error means the contents of the BIOS code itself are damaged.

The BIOS ROM chip on the motherboard is probably faulty. It could also be another component on the motherboard.

You should make sure that all of the BIOS settings in the system are correct, by rebooting the system, going into BIOS setup and double-checking all the values (hopefully against a recent


If you have reset the CMOS memory you need to go into the BIOS setup screen and reconfigure the BIOS. To do that you need to press a key while the computer is booting. Usually F2 but can be other keys. It should tell you on the bottom of the first screen which key to press to enter BIOS setup.
If you don't know the settings the should be one for optimal defaults - use that one. You will also need to reset the time and date.
Save, Exit and re-boot and everything should then work.

This error is not the same as a CMOS Checksum Error, which refers to corrupted values of the CMOS settings, the ones you set through the BIOS setup program. This error means the contents of the BIOS code itself are damaged.


During the boot process you will see on the screen a certain key to press to enter setup
Press and hold that key during the boot up process to enter BIOS you can load failsafe defaults or load optimized defaults ,press escape then press f10 to save to cmos to restart
You will also need to set the time and date

In the main or system setup screen you should be able to see the date and time Using your arrow keys navigate to the date and change the date. Once highlighted on the month, day, or year, press your arrow keys or your page up / page down keys to change the date.
hope this helps you

Nov 18, 2011 | Toshiba Equium 2000 (PV1065E0-011FR) PC...

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My Laptop is Dellstudio15,When I swith on my laptop is showing error while booting it self is: Check date and time settings,System CMOS Checksum is Bad.Please help on this.


This error message means that its time for you to replace you CMOS battery.

CMOS battery is 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.


Hope this information willbe helpful. Thank you for using FIXYA.

Apr 13, 2011 | Computers & Internet

1 Answer

When i boot my system iam getting an error Check Date and Time settings and System CMOS Checksum Bad and Default configuration is used. F1 : Resume F2 :- Setup


Hi Good day!! That error maybe cause of your CMOS battery it may be not working, replace your CMOS Battery (2032 3volts), after you replace it with new one, set your date and time setting according in your time zone.

Oct 13, 2010 | Computers & Internet

2 Answers

I get the message "Bad check sum (CMOS)" Model toshiba tecra 730XCDT


hi friend,

Probably a dead Motherboard battery. Need to enter the BIOS screens and reset values. Especially the time and date. Maybe the boot order and if using USB KBoard enable legusy USB devices. This will occur each time your friend shuts down and reboots until the battery is changed.
Issue
When you turn your Toshiba computer on, you see an error message like: **** Bad RTC battery ****
**** Bad Checksum (CMOS) ****
Check system, then press [F1] key The Real Time Clock (RTC) battery provides power for the internal clock/calendar and for maintaining system configuration settings.
This error can occur when a machine has been left turned-off for an extended period of time (around a month), and is the result of a depleted RTC battery. Other symptoms include not being able to execute Windows Update properly, errors/problems executing application software (like Norton Antivirus), and the appearance of the Windows XP "Desktop Clean Wizard".
Resolution This condition is easy to fix in 3 basic steps: Reset the BIOS defaults
Set the correct date and time in Windows.
Charge the RTC battery Please follow the detailed instructions in the next section.
Procedure Set BIOS defaults Press the [F1] key as instructed in the error message:
**** Bad RTC battery ****
**** Bad Checksum (CMOS) ****
Check system, then press [F1] key In the BIOS setup screen press the [Home] key to restore the default values, then press the [End] key to save and exit, then the [Y] key to confirm and restart the system. Set the correct date and time in Windows As Windows starts-up, you may see an error message about an "Invalid System Time". Go ahead and click "OK" to clear the error dialog. Open the Windows Control Panel and open the "Date and Time" control by double-clicking its icon. Set the correct date and time, then click OK to save. Charge the Real Time Clock (RTC) battery To charge the RTC battery, connect the AC adapter and turn the computer on (both the DC IN and Power LEDs must be green). Leave the machine on for approximately 24 hours to ensure a full charge in the RTC battery. Please note that the RTC battery does not charge while the PC is turned off, regardless of whether the AC adapter is connected or not. Other Information: If, on subsequent reboots, the "Bad RTC Battery" error persists, it's quite likely that you actually do have a bad RTC battery. If that's the case, you should contact a Toshiba Authorized Service Provider to have the system serviced. Windows XP Desktop Cleanup Wizard The first time you reboot Windows XP after resetting the system clock, Windows XP may try to run the "Desktop Cleanup Wizard". Simply Cancel the "Desktop Cleanup Wizard" at the first dialog. If you do manage to clean your shortcuts from the desktop and want to recover them, you will find them in a folder called "Unused Desktop Shortcuts". You can recover them as follows: Double-click to open the "Unused Desktop Shortcuts" folder
Click to expand the "Edit" menu, and click "Select All"
Drag the selected items back to your desktop
Close the "Unused Desktop Shortcuts" folder. You can delete this folder if it is empty.

thank u for using fixya

regards,
sivaranjini

Aug 10, 2009 | Toshiba Tecra 730CDT Notebook

5 Answers

How can i tell if the cfmos batterty is dead or


The computer time will not be correct at all times

Jul 07, 2009 | E-Machines T6532 PC Desktop

1 Answer

What is error 00173, 00192, and 00163


Hi,
Error 192 means a fan error, to test this measure the voltage of the backup battery. If the
voltage is not correct, replace the backup battery. Check the fan and the system board.

Error 163 means the time and date is not set, to set the time and date hit F1 when you see the IBM logo and set the time and date.

Error 173 means the configuration data is lost, to sort that select OK in the error screen and set the time and date.

In most case its the CMOS battery that's run low and need to be changed for a new one, so for the time being you will have to keep setting the time and date and it will boot to windows.


Good luck

Jun 15, 2009 | IBM Thinkpad 600 System Board Motherboard

3 Answers

Turn on computer and message reads ****bad check sum (CMOS) ****


That means that after computer had been off for a long time the CMOS battery has drained, and CMOS (BIOS) settings had been reset to default.

Usually the computer will work fine after pressing F1, but you may get wrong date and time.

Try charging battery completely, often the problem disappears, if it does not , then the choice is between pressing F1 each time you start the laptop, or disassembling the laptop and replacing CMOS internal coin battery, located on the lower side of the motherboard.

May 17, 2009 | Toshiba Satellite 1805-S204 Notebook

1 Answer

CMOS PRBLEM


Because CMOS-BIOS Battery has drained. You need to change the battery. Battery is CR2032 or similar that can be found any supermarket, Hardware or IT store. After replace to battery Set the System time and restart Issue will resolve.

Good Luck

Battery look like this;

d1e2b95.jpg

Jan 12, 2008 | Intel D845EPI (INTELKD845EPILPAK10)...

4 Answers

CMOS battery replacement


Your Pc should have an Intel E210882 motherboard in it.
A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer
is not plugged into a wall socket, the battery has an estimated life of three years. When the
computer is plugged in, the standby current from the power supply extends the life of the battery.
The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.
When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS
RAM (for example, the date and time) might not be accurate. Replace the battery with an
equivalent one. Figure 14 shows the location of the battery.
These batteries are very common and can be purchased at Wal-Mart, Walgreens, Etc...
Here is a link to the motherboard manual with battery replacement procedures:
http://www.asi.com.au/support/Drivers/V206/Manual/SR_English.pdf

Jan 04, 2008 | Computers & Internet

2 Answers

I Could not logon to the system


If the 2 beeps were together, then it is a check sum or memory problem. When it boots enter the bios setup(F2) and check the system time and date (located in 'Standard cmos Settings') to see if it is correct, as this is a good indicator of a flat cmos battery (large type watch battery.) If time and date is incorrect replace battery, if ok turn off pc and try re-setting the bios by putting the jumper on the 'JBAT1' terminal on the motherboard on pins 1-2 ont pins 2-3 then back onto 1-2; then boot pc back up and go back into the bios, set the date and time in 'Standard Cmos Settings' and then look on main bios menu for 'LOAD BIOS DEFAULTS' or similair If non of above works, maybe you have upgraded the memory, remove it and try again with original memory stick. Hope this is of some help

Oct 17, 2006 | Dell OptiPlex GX260 PC Desktop

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