Question about Biostar P4M80-M4 Motherboard

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Problem with my BIOS CMOS Setting

I am having problem with my CMOS Setting, it doesn't retain any setting and I have to reset the date and time everytime I boot my system. I've changed the CMOS battery but the problem still persit. I recently flashed my BIOS to see if it will help, with no result, however I was able to bypass the BIOSTAR page and now I have a warning on the start-up page and i don't know what to do. The message read thus:
CMOS checksum error- Defaults loaded
Warning! CPU has been changed or CPU Ratio changed fail.
Please re-enter CPU settings in the CMOS setup and remember to save before quit!

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Its due to your default CMOS setup does not match with your CPU configuration especially with CPU speed.

  1. To fixed the above problem goto BIOS and navigate settings of CPU, speed etc. Set the speed with the proper value as per manual. And save the settings.
  2. Infuture when you will load default, at that time also set the CPU settings.
  • The CMOS battery might not be connected properly or may be its not producing enough power as per needed by board. So have a look with another battery. Also clean the connection point of the CMOS battery.

Good Luck
Iqbal

Posted on Apr 23, 2008

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1 Answer

Bios password reset


hi

every laptops different but normally u can remove the cmos battery

when you put it back and start the laptop you have to go into cmos setting set the time date and year press default settings and save restart and that should reset the bios

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Tip

How to reset the bios password using PC CMOS Cleaner.


Burn the PC CMOS Cleaner iso ..using ImageBurner or Nero
1.Start up
Insert PC CMOS Cleaner CD, Set BIOS to boot from CD/DVD-ROM.
The first page presents to user is : PC CMOS Cleaner is ready to run.
PC CMOS Cleaner will try to decrypt the encrypted password store in CMOS and list the possible results in the list box:
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If the possible passwords do not work. PC CMOS Cleaner will try to reset the BIOS to the default state.
This action will blank the BIOS password. You may also lose all your previous settings.
There are two choice for you:
Choice 1: Reset password (try to keep date and time)
This choice will try to reset the BIOS, but keep the date and time.
Choice 2: Reset bios (all setting will be set to default, password will be erased)
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Some laptop BIOS can be restored to the factory defaults in the BIOS setting - Default setting.
If your BIOS does not have this option then remove the BIOS battery for 20 or more mins. When you replace the BIOS battery the BIOS will be RESET then go into the BIOS setting scroll to Date & Time to set the current date and time.

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I'm sorry to have to say this but your CMOS battery connection is bad. There is basically nothing you can do other than replace the whole motherboard if it is too much of a problem.

One of my many computers is like this as well. I'm lucky in that as long as I leave that computer plugged in (it doesn't need to be turned on just plugged in), the CMOS won't reset its self. If you aren't that lucky then I would seek out a replacement motherboard.

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Resetting cmos


The best way to RESET the BIOS back to the factory defaults if you do not know the Reset jumper or there isn't one is to remove the CMOS/BIOS battery and wait for approx. 20 mins for the charge in the BIOS to discharge.
If you cannot wait that long then short out the battery terminals on the motherboard with a paper clip.
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I have a Gateway laptop model no. M622-UCX which continues to prompt for the system date configuration in cmos setup during start. It also cannot remember the date and time I entered several times and...


When a laptop/computer prompts for a BIOS date and Time setting every time you boot up, this indicates the BIOS battey is flat or nearly flat. This BIOS battery needs to be replaced and the BIOS Date and Time setting needs to be configured etc.

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The BIOS battery maybe under one of the panels on the bottom of the laptop or under the keyboard.
To reset the BIOS ack to the default settings, go into the BIOS configuration and look at the various configurations, usually there is a setting to load the Default settings, then save and exit, and this would not change the Date & Time setting.
The other way to set the BIOS default setting is to remove the BIOS battery (it is probably a lithium 3volt button battery), wait 1/2 hour and replace the battery, the go into the BIOS configuration and set the Date & Time setting etc.

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You can reset the BIOS back to the default setting by going into the BIOS configuration and there should be a setting "Load default settings" then save and exit.
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1 Answer

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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

Mar 09, 2009 | Dell OPTIPLEX GX150 PIII-1.0GHz 256MB 40GB...

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