Question about IBM ThinkPad 600X Notebook

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Error codes 161 and 163 and problem entering BIOS to settings

Understand that these error codes are for the CMOS battery and time and date setting in the BIOS, respectively
Also realize had done was to remove the CMOS battery which was working fine, and then reconnected it. Does the system prevent entry into the BIOS if the CMOS battery is seen faulty? Without clearing this error [161] it will be impossible to get into the settings?
Additionally the problem still exists after replacing the CMOS battery. Have seen many post this problem in several forums on the net in my searches over the last few years. The one finally saw yesterday, that stated about an adjustment to the sequence to the steps in the manual, a averted a costly system board replacement, is the first one have found that says anything otherwise.
Am looking to see if YOU know what these steps are, or what document they may be in. Did not find them in the Hardware Maintenence Manual C79KDMST, and as stated the one that responded to the requester, wrote that had answered in private, seemingy to protest against thieves. [maybe she was just refering to clearing the POP which is clearly outlined in this manual anyway]
So can you help me more with the correct sequence of steps to entering to the BIOS settings, especially that there is this 'blank' POP requiring a Return at the Lock icon prompt, and with these errors, or at least after the Error 161 is cleared.
Thank You

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2 Answers

What is "the firmware has detected that a CMOS checksum error occurred.Press the Enter key to continue. The firmware has detected that the system date/time has not been set." What is this error.


I assume that you entered the BIOS after replacing the battery and set the date and time? If you cannot get to the BIOS after receiving this message, it usually means that the BIOS has become corrupted, either by failure or by virus. You may be able to reflash it if you can download a bios update from the manufacturer.

Dec 24, 2014 | Computers & Internet

1 Answer

Cmos checksum error-defaults loaded


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.

Make sure the battery has plenty charge or remove the battery for a while, about 5 minutes to see if that restores it some motherboards cmos batteries are soldered in

You could check the site for the machine vendor to see if there is a reset jumper.

If that doesn't work then you will need to refresh the BIOS


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 the Delete or 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.
.

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.

Press F10 Save, Exit and re-boot and everything should then work
hope this helps

Aug 03, 2012 | Dell Computers & Internet

1 Answer

Bios rom checksum error, boot block bios vI.0


Error BIOS ROM CHECKSUM - SYSTEM HALTED.
Cause Bad Hardware
Solution Unfortunately this indicates that your computer BIOS ROM chip or Motherboard is physically bad. It is recommended that you contact your computer manufacturer or take the computer into local service center for repair.
If you wish to repair this issue yourself the motherbard will need to be replaced.
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

Apr 14, 2012 | ASUS A8N-E Motherboard

1 Answer

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

Cmos checksum bad boots to the splash screen then goes black with a blinking white line tried reseting the jumper cmos no luck load default settings no luck removed psu and battery no luck


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

Oct 08, 2011 | EliteGroup ECS Socket Micro ATX...

2 Answers

I have an intel g41 motherboard....every time i switchon d pc...it shows check cmos error and the time and date are set to defaluts


This error occurs when the BIOS battery is flat. Replace the BIOS battery, most motherboards use a lithium battery type CR2032, this is a coin size battery. Check the BIOS battery type used on your motherboard before you purchase the battery.
After replacing the battery go to the BIOS setting and set the Date & Time etc. and you will not have this CMOS error.

Aug 10, 2011 | Intel Motherboard

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

I have several 600's and they all have the same issue. They are giving 161 192 163 errors. I replaced the battery in them and then go to try and setup the time. However, instead of letting me set the...


Hi,

161 = CMOS configuration lost (battery has died).

163 = CMOS error; Clock is not updating.

192 = System fan is faulty, not plugged into the system board or the system board itself is faulty.


Whe you replaced the RTC (real time clock/BIOS battery) did you make sure that the CPU fan was working?

If it is then go back into the BIOS and reset it to defaults. Save the changes and reboot, then go back into the BIOS and try to set the time and date.


Regards.

Feb 22, 2010 | IBM ThinkPad 600 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

Bios lock, ERROR CODE 0271


Hi,
Error code 0271 - Date and time error. Neither the date nor the time is set in the computer.
Run BIOS Setup Utility to reset the time and date
It sounds as though your computer has the wrong time in the CMOS. The CMOS (Complementary Metal-Oxide Semiconductors) is the chip that holds the basic startup information for the BIOS, system and its peripherals while the system is turned on and off.

If you can get into the BIOS check the date and time settings and make sure they are correct.

It may also be a case of the CMOS battery going out. When this happens your computer will tend to not keep the correct time. They are cheap and relatively easy to replace. Before buying a new batter your can try to take it out and let it sit for about 10 minutes or so to reset the CMOS and then go put the battery back in and go into the BIOS and reset the clock.

Hopefully taking the batter out or replacing it will get past your lock icon asking for the password. Just search for CMOS or BIOS default password for your brand of laptop.

Feb 03, 2009 | IBM ThinkPad R52 Notebook

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