CMOS SETTING and BOOTING

it's not locksum ,its Check SUM or CRC errors.
what OP, are you running,? windows what. i guess.

the CMOS battery just died.
install a new one.
all puters this old do that, the battery is good for 7-10 years,
and all fail.
DO NOT FLASH your BIOS, fix the real problem first

when the battery dies, all our bios setting were lost
including boot device, and order
fix battery
then go into BIOS and put back boot order.

It indicates a problem with the system boards. For more info, start here.

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

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

CMOS checksum errors
Explanation: A checksum is computed as an error-detecting code, to protect the BIOS settings stored in the CMOS memory. Each time the system is booted this number is recomputed and checked against the stored value. If they do not match, an error message is generated to tell you that the CMOS memory contents may have been corrupted and therefore some settings may be wrong. BIOSes react in different ways to encountering this sort of error. Some will warn the user and then continue on with whatever settings were in the CMOS. Others will assume that the settings that were in the CMOS were corrupted and will load default values stored in the BIOS chip "for safety reasons". The error message will indicate which your system is doing.
Diagnosis: The most common cause of checksum errors in CMOS is a battery that is losing power. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values.
Recommendation: Follow the instructions in this section to address the CMOS corruption. 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 BIOS settings backup).

The beep codes below may help you identify the possible computer problems. However,
they are only for reference purposes. The situations might differ from case to case.
gAMI BIOS Beep Codes
*Computer gives 1 short beep when system boots successfully.
*Except for beep code 8, these codes are always fatal.
1 beep Refresh failure
2 beeps Parity error
3 beeps Base 64K memory failure
4 beeps Timer not operational
5 beeps Processor error
6 beeps 8042 - gate A20 failure
7 beeps Processor exception interrupt error
8 beeps Display memory read/write failure
9 beeps ROM checksum error
10 beeps CMOS shutdown register read/write error
11 beeps Cache memory bad
g AWARD BIOS Beep Codes
1 short: System boots successfully
2 short: CMOS setting error
1 long 1 short: DRAM or M/B error
1 long 2 short: Monitor or display card error
1 long 3 short: Keyboard error
1 long 9 short: BIOS ROM error
Continuous long beeps: DRAM error
Continuous short beeps: Power error

CMOS checksum errors
Explanation: A checksum is computed as an error-detecting code, to protect the BIOSsettings stored in the CMOS memory.Each time the system is booted this number is recomputed and checked against the storedvalue. If they do not match, an error message is generated to tell you that the CMOSmemory contents may have been corrupted and therefore some settings may be wrong. BIOSesreact in different ways to encountering this sort of error. Some will warn the user andthen continue on with whatever settings were in the CMOS. Others will assume that thesettings that were in the CMOS were corrupted and will load default values stored in theBIOS chip "for safety reasons". The error message will indicate which yoursystem is doing.
Diagnosis: The most common cause of checksum errors in CMOS is a battery that islosing power. Viruses can also affect CMOS settings, and motherboard problems can alsoaffect the stored values.
You should make sure that all of theBIOS settings in the system are correct, by rebooting the system, going into BIOS setupand double-checking all the values (hopefully against a recent BIOS settings backup).
If you have created a backupcopy of your CMOS settings then use them to restore the settings to the correctvalues. To find the problem itself:

• Troubleshoot the battery to make sure that it is not causing the problem.
• Make sure that you scan the system for viruses. Viruses can corrupt the CMOS memory (although they cannot reside in it).
• Troubleshoot the motherboard. Motherboard problems can sometimes (rarely) result in CMOS corruption.check the sata connector if applicable
  
• Troubleshoot your power supply. A failing supply can lead to problems with the whole system, and especially motherboard components.

Hi Oliver, the most common error related to the message,
(Bios Rom Checksum Error). Someone has left a floppy disk in the floppy drive. Once the floppy disk has been removed press the reset button on the PC, your windows will start normally. Next place to look is in your bios.
Open your manual to page 27.
Enter your bios & go to the title Advanced BIOS Features. Check First, Second & Third boot devices they should be as follows. Floppy disk drive, CD-ROM drive & primary hard disk drive. If both of the above are ok than try clearing the cmos/bios by resetting the cmos jumper (JP1) location on page 5. Descriptions of page five on page 6. CMOS settings on page 9.
When your system restarts re-enter your cmos & reset up your bios settings. Lastly if none of the above has fixed the error message, than remove the cmos battery & check its voltage. It should maintain 3volts. If yours' is lower than 3volts replace the cmos battery. There is one other possible fix. It’s an option not given lightly. Flashing a cmos/bios is not recommended unless all other options have failed.
Bios link for the EliteGroup P4VMM2 V8.1
http://www.ecs.com.tw/ECSWebSite/Downloads/ProductsDetail_Download.aspx?detailid=436&DetailName=Bios&DetailDesc=P4VMM2%20%20(V8.1)&CategoryID=1&MenuID=82&LanID=0
Main web site;
http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?CategoryID=1&DetailID=436&DetailName=Feature&MenuID=52&LanID=0

Good luck Oliver!
Mike

rahul23petit

"CMOS" checksum error default loaded" means ur mother board cmos battery fail (which is locate at mother board), to solve this problem replace it by new one (u can buy it form any computer accessories shop). all oher problem happen for it.

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??????