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View Full Version : Daylight Saving Changes



Ext User(steguanzi)
04-06-2007, 11:53 PM
If you have a pc not logged in (XP, or XP embedded) and Date/Time crosses the
'line' between Europe Standard Time and Daylight Standard Time, the Date/Time
changes right, according to the settings 'automatically adjust clock for
daylight saving changes'. now switch off the power supply, so the PC goes
down. Turn on again and windows XP starts but the clock has one hour more. do
the same again and you have another hour! now login once. you can do the same
test but everything works right. It'seems that xp changes the time but it do
not save this information until you login. so if you power off and than on
the system changes the time again. why?

Ext User(Andrew E.)
05-06-2007, 01:53 AM
XP uses the BIOS clock settings at some points,where it changes to
windowstime.
com and/or back to BIOS time is worth checking,but thats probably where its
at.At shutdown the hds no longer can/could keep time,only the BIOS keeps
running thru the battery,keeping time.

"steguanzi" wrote:

> If you have a pc not logged in (XP, or XP embedded) and Date/Time crosses the
> 'line' between Europe Standard Time and Daylight Standard Time, the Date/Time
> changes right, according to the settings 'automatically adjust clock for
> daylight saving changes'. now switch off the power supply, so the PC goes
> down. Turn on again and windows XP starts but the clock has one hour more. do
> the same again and you have another hour! now login once. you can do the same
> test but everything works right. It'seems that xp changes the time but it do
> not save this information until you login. so if you power off and than on
> the system changes the time again. why?

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