Would that be *exactly* three hours, or approximately 3 hours? One possibility is that your time zone may be set incorrectly. Some computer clocks keep time in UTC (Universal Coordinated Time, formerely Greenwich Mean Time) and expect the software to do time zone calculations. Will it go *more* than 3 hours off if you just leave it?
Does it lose time when it's on, or only when it's off? Your CMOS battery may be going bad, which sometimes happens when the computer becomes 3-5 years old. Losing time is the first symptom.
Then, there are some other possibilities, but those are the most common.
no subject
Does it lose time when it's on, or only when it's off? Your CMOS battery may be going bad, which sometimes happens when the computer becomes 3-5 years old. Losing time is the first symptom.
Then, there are some other possibilities, but those are the most common.
(no subject)
(no subject)