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

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

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Computer Hardware
A brownout is defined as:

has nothing to do with electricity
alternating power out, power on lasting a few minutes
a slightly decreased voltage lasting from seconds to minutes or more
a slightly elevated voltage lasting from seconds to minutes or more
complete power out lasting a few minutes

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