Question about Dell OPTIPLEX GX150 PIII-1.0GHz 256MB 40GB DESKTOP (PCPIII1000DELL256MB)

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Bios date and time problem

Whenever i start my computer bios message appears the system date time checksum error press F4 when i press F4 it comes to bios setting date and time is wrong. i set it then save setting computer reboots then everything fine. but problem is that whenever i again start my computer same message appears acctually bios dos not saving correct date and time can any body help. i have replaced bios battery but problem still there

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You need to replace the cmos battery in your computer. Theu are usually Cr2032 batteries which you should be able to pick up for about £1.

unplug your computer and open the case.
When you look at the motherboard you should be able to easily locate the cmos battery cliped onto the mobo.
Take the old battery out and insert the new one.
put the case back on and plug the pc into the mains again.
You will need to re-enter the date etc the next time you boot up, but the settings should be retained after that.

Ian

Posted on Mar 09, 2009

  • gagan
    gagan Nov 04, 2013

    i have replaced the battery but starting problem still exists. however date&time are updated automatically when i start my pc,

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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

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

Hi Everybody, My server Power Edge 650 asking to press F1 during every startup. How to get rid of this. Thanks Ezhilmani


Hi There.

Symptoms
* cmos checksum error messages
* error with date time error

Solution
* Replace CMOS battery.

Procedure

1. Locate your CMOS battery.


pcsyke_74.jpg

2. Turn of your Desktop.
3. Remove the power cable from your Desktop.
4. Press power button to discharge your Desktop from electricity.
5. Desktop should be laid down horizontally.


pcsyke_71.jpg

6. Remove the battery and avoid forcing.
7. Replace the battery with same model or equivalent.
8. Put the new battery firmly in the allocated slot. (Positive side should be visible).
9. Plug the power cabe and start up your PC.
10.Enter Bios by pressing DELETE or F2 and load defaults save and quit, it will reboot automatically.
11.Enter Bios modify settings save and quit.
12.The End

Hopefully this information helps.
Thank you for using FixYa.

Jul 19, 2011 | Dell Poweredge 650 - P4 3.0GHZ, 1GB/40GB...

2 Answers

On my computer i have to push f1 to start it


first try to notice the message before the (press F1 to continue) message, it could be a bad component (memory, hard drive, etc...) or the time & date is not set correctly in the BIOS, this would help a LOT thank's...

Jun 25, 2011 | Dell Computers & Internet

1 Answer

When i switch the ups power on my pc automatically starts and the the BIOS setup page comes and in it,it is written CMOS checksum error and asks me to set the time.even after setting everything when i...


Sounds like you CMOS battery is FLAT, please locate and replace, it is a 3.6V flat "Cell" This may just sort you out. Checksum error is because, something is different from the stored checksum it has in memory.

Mar 25, 2010 | Computers & Internet

1 Answer

Computer freezes when I start it


Hi,

Please make sure the boot device is correct from BIOS.

If correct please boot your system from Windows XP bootable CD and choose recovery option in Command Mode.

run the command

chkdsk /f C:


Check the result and let me know if any error comes.

Jul 30, 2009 | Computers & Internet

1 Answer

**** RTC battery is low or CMOS checksum is inconsistent **** Press [F1] to set Date/Time


Hello

Please reset cmos to factory defaults.
Then enter the bios setup and configure it and save changes.

Apr 20, 2009 | Computers & Internet

5 Answers

Bios check sum error


You can try flashing/updating the BIOS if nothing works.

Nov 28, 2008 | Computers & Internet

2 Answers

My computer went back to older clock date as 1610


try starting your computer in safe mode and see if you can do anything productive there, like scanning for viruses or spyware. also check if you can do the following:
CTRL+ALT+DEL (open task manager)
goto Start>Run>Regedit (open registry editor)
goto Start>Control Panel>Display>Properties (change display settings)
right click on clock at tray and change the current time to correct settings

if you cannot do any of these activities, then your computer may probably been compromised by a virus or malware.

Jan 02, 2008 | Dell OPTIPLEX GX150 PIII-1.0GHz 256MB 40GB...

1 Answer

CMOS BAD CHECKSUM


Reseat your ram modules and remove the 2nd hdd
try rebooting
If same thing , then reset the Bios to default ,save and exit
Try again..
If same thing ? assuming you have more then 1 stick of ram,, try booting with 1 stick removed . to eliminate ram modules being bad
then switch ram untill you have verified ram chips are or aren't bad
Hope this helps

Nov 13, 2007 | E-Machines eMachines Desktop PC

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