Question about Toshiba 4030CDT (P000271450) Motherboard

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Im getting a boot time error called CMOS error and then i have to enter the sytem date and time every time i start the pc. After that it shows me an error like Invalid System Disk. wht does tht mean?

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The CMOS error is caused by a dead motherboard battery. There is a small battery on the motherboard Usually a 2032 battery. The dead motherboard battery could also cause the Invalid system disk because a dead motherboard battery will also cause the motherboard to lose the Hard drive settings.

Posted on Nov 12, 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...

1 Answer

Every time I reboot my pc I get the checksum error, all my defaults are loaded and also cant get to the setup


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
click start control panel date and time you can make your adjustments to the date and time from there also right click on the date and time on the bottom toolbar (bottom of screen) you should see Adjust date and time tab
hope this helps you

Sep 14, 2011 | Computers & Internet

1 Answer

Compaq Presario 2500 stopped loading windows XP with a prompt STOP: c0000221 {bad Image Checksum} The image COMCTL32.dll is possibly corrupt. The header checksum does not match the computed checksum.


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 to press delete to enter setup
Press and hold delete 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
click start control panel date and time you can make your adjustments to the date and time from there also right click on the date and time on the bottom toolbar (bottom of screen) you should see Adjust date and time tab
hope this helps you

Sep 09, 2011 | Compaq Presario 2100 and 2500 ,NX 9000...

1 Answer

Start-up and shut down problems, When starting up it says, press f1 to continue, f2 to run set-up.... F1 works but I am getting tired of doing this. Now when the computer starts, it stops at...


Hi names Rui,


For your problem the computer may display a prompt to press F1/F2 or any other key to enter setup each time the computer boots as a reminder on how to enter CMOS. However, if the computer asks to press F1/F2 (or another key) to enter setup and does not continue, this may be caused by any of the below reasons.

  1. New hardware has been recently installed.
  2. Error or confliction with settings in CMOS.
  3. CMOS battery is bad or failing.
Solution:

New hardware has been recently installed

If new hardware has been recently installed into the computer, it is likely that you are receiving the prompt "Press F1 or F2 to enter setup" because CMOS needs to verify that the new detected hardware is properly being setup in CMOS. Enter CMOS setup and save the settings and exit. If you continue to get errors continue to the next step.


Error or confliction with settings in CMOS

If no new hardware has been added or you continue to get this prompt verify no error or conflictions exist in CMOS. Press the key to enter setup and verify that all settings are correct.

If your time and date are not set correctly, your battery is more than likely bad. Try setting the correct time and date, save the settings and then reboot. If after turning off the computer the time and date get reset again replace the battery.

If the time and date are correct and everything else appears to be correct try resetting the CMOS values to the defaults.


CMOS battery is bad or failing

If you continue to receive the prompt to enter setup each time the computer boots up and you have attempted to follow the above suggestions, your CMOS battery is bad. We recommended that the CMOS battery be replaced.


hope this will help you.

Jul 20, 2011 | Dell Dimension 2400 PC Desktop

2 Answers

Hello, when I put my pc running it says CMOS checksum error press F1 to enter or Del to enter setup, but I press Del when I save changes "save and exit" the computer restarts, but this time...


The Checksum error basically shows that boot settings which were previously set has been changed or reset. This usually happens when the battery loses its charge and thus fail to retain the CMOS settings. This can also be caused by a power surge or a damaged motherboard. But most of the times it would be the battery problem.

You can try replacing the CMOS battery and enter the values back into CMOS or reset values to default. Then switch off and boot up again.
Hope this works. Good Luck. ~SmokinJoe~

Apr 28, 2011 | EliteGroup KM400-M2 Motherboard

1 Answer

Hi, Im having problem booting my COMPAQ PCs


hi , your first machine needs a hard drive disc error check performed (C drive/properties/tool/error check and tick the 2 boxes ).
the second machine needs the bios battery replaced .
hope this helps

Jan 22, 2010 | HP Compaq EVO D5S PC Desktop

3 Answers

Cmos checksome error


I don't know what kind of unit you are useing.
You need to watch the screen when it boots up.
It will say check sum error, press ? F-2 to continue or F-1 to enter setup.??
Enter the setup screen and change the date and time.
Save ? F-10 and exit.
I hope this has helped you.

Oct 05, 2009 | Intel D102GGC2 Motherboard

4 Answers

When I turn my computer on, I get an istant error message: CMOS setttings error. Any idea what to do?


I THINK YOUR MOTHERBOARD BATTERY MAY BE DAMAGED OR DOWN. YOU HAVE TO REPALCE THE BATTERY AND TRY AGAIN TO START THE PC.

Oct 03, 2009 | Fujitsu Siemens AMILO Pro V2010 Notebook

1 Answer

Ibm thinkpad


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.

Jul 29, 2009 | IBM Computers & Internet

1 Answer

Im getting a boot time error


Try changing the Motherboard battery
Small silver round thing about12 to 15 mm across it is probably flat

Nov 12, 2008 | Toshiba 4030CDT (P000271450) Motherboard

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