Question about Toshiba Satellite L15-S104 Notebook

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CMOS or RTC battery for this laptop : can it be replaced

Want to know if the cmos ( assuming it's also known as rtc battery ) battery for the Toshiba Satellite L15-S104 can be replaced. Just got off with the phone with a retailer and was told that it cannot be replaced since it is on the motherboard itself. Also, if it can be replaced, will be great if i could be pointed to the exact battery ( part number ).

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Re: CMOS or RTC battery for this laptop : can it be...

Hi AshishB, Yes, Toshiba does refer to the CMOS battery in their literature as the real time clock battery. Your retailer is half right, the battery is on the motherboard but its attached via a connector and it can be replaced. Here are links to a couple of venders that sell the RTC battery for your laptop: - Http://,Satellite,L15-S104,Laptop,Batteries-Backup-RTC.aspx - Let us know if you have any other questions and please don?t forget to rate the posting.

Posted on Jan 19, 2007

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Re: CMOS or RTC battery for this laptop : can it be...

Hw does one reset the CMOS password on a Toshiba Satellite L15-S104 (PSL10U-01X02F) ?

Posted on May 18, 2011

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Replace cmos battery

How to replace the CMOS battery in your laptop Dismantle portege laptop
this might not be your specific laptop it might give you some insight into its removal i have provided an ebay link showing the cmos battery and its connection lead

Feb 01, 2013 | Toshiba Portege R500-S5006V Notebook

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My computer said "163 time

Date & Time are kept by RTC (Real Time Clock) CMOS Battery, which is usually a coin-cell battery on the motherboad.
As the RTC of your system is dead, it can not keep time.
Therefore, RTC (CMOS Battery) is required to be replaced with a new one to fix the issue.

Let me know if any further clarification is required. Hope this helps! Dont forget to rate the solution!!

Dec 27, 2010 | HP Compaq Notebook nc8230 Notebook

3 Answers

I have a Toshiba Satellite 1415-S173 with a bios password I don't know (original owner is deceased). How can I bypass or remove?

Remove the CMOS battery from the motherboard. Turn it over, open it up, and look for a little watch battery.

Oct 31, 2009 | Toshiba Satellite 1415-S173 Notebook

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.
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


Aug 10, 2009 | Toshiba Tecra 730CDT Notebook

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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

2 Answers

Cmos battery

You'll need to gain access to the top of the mainboard, here's a good guide: In case you don't know, the cmos battery is a round, flat silver object, coin-like. Good luck!

Apr 18, 2007 | Toshiba Satellite M45-S265 Notebook

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