Computer Hardware
You get a CMOS checksum error during bootup. What is most likely the cause?

BIOS needs updating
hard drive types are incorrectly defined
power supply is bad
CMOS battery is nearing end of life

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Computer Hardware
To install a second IDE drive into a computer, you must

Verify that you attach the drive to the connector at the end of the ribbon cable
Set the master-slave jumper to slave on the second drive
Verify that you define the new drive as D: in the CMOS setup
Use the IDE configuration software to set the new drive as slave

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