Question about Asrock P4I45GV R5 Motherboard

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Always display bad cmos setup

I replace already the cmos battery , but when i switch it on tha bad cmos setup message always display.

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  • 53 Answers

Have you checked the jumper next to the cmos battery? check if its good not broken and also try and upgrade your firmware. visit your motherboard's manafacture for the firmware upgrade.

Posted on Nov 13, 2008

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AFTER SWITCHING ON, SCREEN STAYS FROZEN AFTER SAYING CMOS CHECKSUM ERROR- DEFAULTS LOADED


Hi there,

When starting your PC, the following error message is displayed:

CMOS wrong
CMOS MEMORY size WRONG
CMOS Checksum Bad
CMOS checksum error defaults loaded
Warning! CPU has been changed please re-enter cpu settings in the cmos setup and remember to save before quit!
You are prompted to:

Press F1 to resume
Press F2 to load default values and continue


This is due to the fact that the CMOS, which contain data related to the BIOS, has been reinitialized and that your PC has been reset to factory settings.

Solutions:

Reinitializing the BIOS
  • Change BIOS battery
    • If the problem persist this may be due to the fact that the battery powering the CMOS (when the computer is shut down allows the CMOS to store information), is depleted.
    • The CMOS battery is a small pin found on the mother board, you can refer to the manual provided with your motherboard to change it or have the nearby computer technician change it for you if you don't want to risk any damage.
    • More information with: Replacing the battery of your motherboard (CMOS battery)
Post back if it is not working we will be happy to help you.
Hope this helps.
Cheers!!!!

Jan 12, 2011 | Sharp Actius PC-RD10 PC Notebook

Tip

CMOS Checksum error


Issue:
CMOS Checksum Bad or CMOS Date/Time Not Set


ae4e911.jpg
Cause:
This issue is caused when the CMOS values are incorrect. This issue can occur because of any of the below possibilities.
* Bad or old CMOS battery.
* BIOS update.

Workaround 1:
1. Disconnecting power from computer without shutting down computer.
2. Attempt to reboot the computer. If error still occurs after rebooting the computer enter CMOS setup and check all values, this includes verifying the time and date are correct. Once everything has been verified and/or changed make sure you save and exit CMOS setup.
3. If you have a Phoenix BIOS and have an option for 'Reset Configuration Data', set this value to 'Yes' and save and exit the CMOS.
4. If the computer was had the power disconnected while it was still running it is possible this could cause the CMOS to become corrupt. Ensure that the computer is ready to be shut off before turning off the computer. If you have a laptop computer ensure that the battery is charged before disconnecting the power connection.
5. If the CMOS values have become corrupted entering the values in CMOS setup and saving and exiting CMOS should resolve your issues.
Note: If this issue continues to occur after you turn off your computer off it is possible that the CMOS battery may be failing or already bad. Before considering replacing the CMOS battery try leaving your computer on for several days.
Workaround 2:
If you performed workaround 1 and the error occurs again after a complete power down (i..e. removing the power cord), the CMOS battery is likely bad. Most systems use a small coin style lithium battery. These often last 3-6 years, but at some point run out of juice and need to be replaced. For desktops, your system manual or motherboard manual should specify the type of battery and location on the motherboard. For laptops, it is often very difficult to access and may require a professional to replace it. To replace the battery on a desktop system:
1. Turn off the system and remove the power plug.
2. Remove the case or side panel to access the motherboard.
3. Look for a round silver coin cell, typically in a black holder.


06928b6.jpg
4. Remove the battery while noting which way the battery is located. You may need a small flat screwdriver to release the side clip.
5. Install the replacement battery with the same battery type, being careful to insert it in the same direction as the removed battery (or using the polarity marked on the holder or manual).
6. Reassemble the case and power.
7. Turn on the power. You will get the CMOS Checksum Bad error once more, but it should be the last time. Go into the BIOS setup and set the date and time, and any other options you prefer.

on May 30, 2010 | Computers & Internet

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

CMOS bad message being displayed


what you should do? here is what you do.....a simple idea....replace the CMOS battery and 100% it will work good...it will not bugging you everytime you open the pc....check,i need to share only my experience.

Mar 03, 2009 | Intel D845GVSR Motherboard

2 Answers

MY LAPTOP(hp compaq presario v2000)BEEPS TWICE AND DISPLAYS PRESS F1 TO RESUME OR F2 TO SETUP!pls help


Hi, and welcome to FixYa
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 issue can be caused by any of the below possibilities.
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.

Error or confliction with settings in CMOS
If no new hardware has been added to the computer or the new hardware has been removed and you continue to receive the error, it is likely that there is an error or confliction with the CMOS. Press the key requested to enter setup and verify that all settings are correct. If everything appears to be correct try resetting the CMOS values to the defaults and/or Reset Configuration Data. Additional information about how to do this can be found on document CH000976.
If all settings appear to be correct, save changes and exit CMOS setup. If the error continues to appear, enter setup again and restore all CMOS values to default.
· See our CMOS page for additional help and information with the CMOS.
· Additional information about getting into the CMOS / BIOS setup can be found on document CH000192.
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, it is also possible that the CMOS battery may be bad or failing. Generally; when this occurs, the computer is not holding the time or date correctly. If this is occurring it is recommended that the CMOS battery be replaced.

regards
/Teis the Wiz - -> Vote "FixYa" :-)

Dec 05, 2008 | Computers & Internet

1 Answer

Prompt to enter setup when started


press del to enter to cmos and set to load setup default and select exit and save changes and if happen again replace your cmos battery.

Nov 24, 2008 | Computers & Internet

1 Answer

Press F4


svjyrat

"always message to press F4 at the time of star up". this problem happen when CMOS detect any error. is also happen if CMOS battery fail (Chack sum error).

to solve this problem at first check CMOS battery (it voltage less then 3V or not) if it bad then replace it. u can buy this battery form any computer accessories shope.

or if u not connect floppy drive, and controller enable. if u desable floppy drive contoller from CMOS setup (in intel mother board is show BIOS setup) then this problem solved.





Jul 03, 2008 | Intel Motherboard

1 Answer

Bios


Replace the CMOS battery that is busted. after replacing configure in bios setup and load bios setup default.

Feb 01, 2008 | E-Machines eMachines Desktop PC

5 Answers

Bad BIOS checksum.... CMOS bad checksum errors


BOOT BLOCK COMPATIBLE VERSION VER .005
BAD BIOS CHECKSUM

CHECKING FOR CD ROM
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
NO CD-ROM FOUND
CHECKING FOR FLOPPY DISK
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
NO FLOPPY DISK FOUND

Does someone already fix this problem??????

Nov 15, 2007 | ASUS M2N-MX Motherboard

1 Answer

CMOS Setup Problem


your cmos battery is bad,try and change it

Feb 26, 2007 | ASUS P4GE-MX Motherboard

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