Having problems with your Toshiba Tecra 730CDT Notebook ?

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

Answers :

This is an error message you will get when your CMOS battery is dying or already dead. You will need to get the CMOS battery replaced by taking the machine apart yourself and replacing it or sending the computer to Toshiba for them to replace it.
\015\012Let me know if there is anything else I can help you with.
\015\012Ted - The PC Man
Hi friend,
\015\012Probably 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.
\015\012When you turn your Toshiba computer on, you see an error message like: \015\012**** Bad RTC battery ****
**** Bad Checksum (CMOS) ****
Check system, then press [F1] key \015\012The 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". \015\012
Resolution \015\012This condition is easy to fix in 3 basic steps: \015\012Reset the BIOS defaults
Set the correct date and time in Windows.
Charge the RTC battery \015\012Please follow the detailed instructions in the next section. \015\012
Procedure \015\012Set BIOS defaults \015\012Press the [F1] key as instructed in the error message:
**** Bad RTC battery ****
**** Bad Checksum (CMOS) ****
Check system, then press [F1] key \015\012In 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. \015\012Set the correct date and time in Windows \015\012As Windows starts-up, you may see an error message about an "Invalid System Time". Go ahead and click "OK" to clear the error dialog. \015\012Open 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. \015\012Charge the Real Time Clock (RTC) battery \015\012To 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. \015\012Other Information: \015\012If, 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. \015\012Windows XP Desktop Cleanup Wizard \015\012The 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. \015\012If 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: \015\012Double-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.
\015\012thank u for using fixya
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