It can lose time especially if you rarely turn your computer off and on. Running programs that require lots of memory can also cause the clock to slow down. Restarting your computer should fix the problem. If it doesn't, try re-setting the CMOS internal clock. Press F2 during initial boot up to check and change time is needed.
To set your computer clock go to Start>run and type
cmd >press enter
type or paste this in the dos prompt:
net time /setsntp:tick.usno.navy.mil
That will have your computer sync with the US Navy clock, which is the offical clock of the USA.
To set your computer clock go to Start>run and type
cmd >press enter
type or paste this in the dos prompt:
net time /setsntp:tick.usno.navy.mil
That will have your computer sync with the US Navy clock, which is the offical clock of the USA.
Download a free program called atomic clock sync. It can be had at download.com and when run will automatically sync up your computers clock to the US atomic clock in Boulder colorado.
Macs also have a battery and it's required for keeping time just like a PC. Also, on some Macs, the battery is required to boot the machine. So in some cases. No battery, no boot at all.
