BIOS / Boot Up Problems

	BIOS Display Error		Master Boot Record Corruption		Windows Blue Screen Dump
	Blank Screen At Start Up		Unmountable Boot Volume		Windows Failed To Load Due To Missing Files
	CMOS Checksum Error		Missing NTLDR		Invalid Partition Table
	Invalid Boot.ini or HAL.dll		Windows Boot Up Errors

Related Topics

CMOS Checksum Error

You power up your computer and the screen displays the following error message:

• CMOS checksum Error: Defaults loaded

Possible Causes

A checksum error shows that boot up settings which were previously set have been changed. This usually happens when the battery looses its charge and thus fail to retain the CMOS settings. This can also be caused by a power surge and a damaged motherboard.

Resolution

1. Reboot the computer
2. If the error persist, replace the CMOS battery
3. Enter the values back into CMOS or reset values to default

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