Guest spud Posted January 31, 2009 Posted January 31, 2009 Desktop 6 months old and time gone haywire today.Updated it a number of times but keeps going slow> Cmos battery?? Quote
Guest Ken Blake, MVP Posted February 1, 2009 Posted February 1, 2009 On Sat, 31 Jan 2009 20:22:55 -0000, "spud" <spud@yahoo.com> wrote: <span style="color:blue"> > Desktop 6 months old and time gone haywire today.Updated it a number of > times but keeps going slow> > > Cmos battery?? </span> There's no way to answer that for sure without more info from you. Before anyone whose clock is running slow rushes out to buy a new battery, he should first take note of whether he is losing time while the computer is running or while it's powered off. If it's while powered off, the problem is very likely the battery. But if it's while running, it can not be the battery, because the battery isn't used while the computer is running. If the clock loses time while running, try this: Open a command prompt window (Start | Run | cmd) and enter the following commands: net stop w32time w32tm /unregister w32tm /register net start w32time -- Ken Blake, Microsoft MVP - Windows Desktop Experience Please Reply to the Newsgroup Quote
Guest Richard Urban Posted February 1, 2009 Posted February 1, 2009 Actually the battery only is used when the computer is powered off and disconnected from the mains (unless the technology has changed over the years). There is always power to the M/B (a trickle charge so to speak) when the computer is plugged in. Notice that there are LED's on the M/B that are powered on at all times - even when the computer is turned off. If there is power to the M/B the battery is not used. If I am wrong, please correct me. (-: -- Richard Urban Microsoft MVP Windows Desktop Experience "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message news:8ms9o49u9v2rc67rbjr6eoce322c0a0lgr@4ax.com...<span style="color:blue"> > On Sat, 31 Jan 2009 20:22:55 -0000, "spud" <spud@yahoo.com> wrote: ><span style="color:green"> >> Desktop 6 months old and time gone haywire today.Updated it a number of >> times but keeps going slow> >> >> Cmos battery??</span> > > > > There's no way to answer that for sure without more info from you. > > Before anyone whose clock is running slow rushes out to buy a new > battery, he should first take note of whether he is losing time while > the computer is running or while it's powered off. If it's while > powered off, the problem is very likely the battery. But if it's > while running, it can not be the battery, because the battery isn't > used while the computer is running. > > If the clock loses time while running, try this: > > Open a command prompt window (Start | Run | cmd) and enter the > following commands: > > net stop w32time > w32tm /unregister > w32tm /register > net start w32time > > > -- > Ken Blake, Microsoft MVP - Windows Desktop Experience > Please Reply to the Newsgroup </span> Quote
Guest DDW Posted February 1, 2009 Posted February 1, 2009 On Sun, 1 Feb 2009 13:01:51 -0500, "Richard Urban" <richardurbanREMOVETHIS@hotmail.com> wrote: <span style="color:blue"> >Actually the battery only is used when the computer is powered off and >disconnected from the mains (unless the technology has changed over the >years). > >There is always power to the M/B (a trickle charge so to speak) when the >computer is plugged in. Notice that there are LED's on the M/B that are >powered on at all times - even when the computer is turned off. > >If there is power to the M/B the battery is not used. > >If I am wrong, please correct me. (-:</span> That's the way I've always understood it. But folks persist in saying a failing CMOS battery is what causes Windows time to run slowly. That is NOT the reason. DDW -- Reply via this group No email please Quote
Guest Ken Blake, MVP Posted February 1, 2009 Posted February 1, 2009 On Sun, 1 Feb 2009 13:01:51 -0500, "Richard Urban" <richardurbanREMOVETHIS@hotmail.com> wrote: <span style="color:blue"> > Actually the battery only is used when the computer is powered off and > disconnected from the mains (unless the technology has changed over the > years). > > There is always power to the M/B (a trickle charge so to speak) when the > computer is plugged in.</span> Yes, that's correct, at least for the great majority of computers. <span style="color:blue"> > Notice that there are LED's on the M/B that are > powered on at all times - even when the computer is turned off. > > If there is power to the M/B the battery is not used. > > If I am wrong, please correct me. (-:</span> My understanding is that the trickle charge is insufficient to keep the clock running correctly. If the computer is powered off, even if still plugged in, the clock primarily runs off the battery, and if the battery fails, the clock loses time. <span style="color:blue"> > "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message > news:8ms9o49u9v2rc67rbjr6eoce322c0a0lgr@4ax.com...<span style="color:green"> > > On Sat, 31 Jan 2009 20:22:55 -0000, "spud" <spud@yahoo.com> wrote: > ><span style="color:darkred"> > >> Desktop 6 months old and time gone haywire today.Updated it a number of > >> times but keeps going slow> > >> > >> Cmos battery??</span> > > > > > > > > There's no way to answer that for sure without more info from you. > > > > Before anyone whose clock is running slow rushes out to buy a new > > battery, he should first take note of whether he is losing time while > > the computer is running or while it's powered off. If it's while > > powered off, the problem is very likely the battery. But if it's > > while running, it can not be the battery, because the battery isn't > > used while the computer is running. > > > > If the clock loses time while running, try this: > > > > Open a command prompt window (Start | Run | cmd) and enter the > > following commands: > > > > net stop w32time > > w32tm /unregister > > w32tm /register > > net start w32time > > > > > > -- > > Ken Blake, Microsoft MVP - Windows Desktop Experience > > Please Reply to the Newsgroup </span></span> -- Ken Blake, Microsoft MVP - Windows Desktop Experience Please Reply to the Newsgroup Quote
Guest Sam Hobbs Posted February 1, 2009 Posted February 1, 2009 "DDW" <dd.wright@KILLSPAMcomcast.net> wrote in message news:s01co4drcgen2qkblalfg9p7pnr3phj004@4ax.com...<span style="color:blue"> > > But folks persist in saying a failing CMOS battery is what causes > Windows time to run slowly.</span> The original AT style power supplies did not provide power when they were turned off. Actually the ATX power supplies can be turned off except the switch is in the power supply itself, not the front of the computer; correct? So those of us familiar with the older technology might tend to think that turning off the power would require use of the battery, but computer people just have to make things more complicated. Quote
Guest Peter Foldes Posted February 1, 2009 Posted February 1, 2009 Richard The time is always dependent on the CMOS battery. It runs on that computer open or not -- Peter Please Reply to Newsgroup for the benefit of others Requests for assistance by email can not and will not be acknowledged. "Richard Urban" <richardurbanREMOVETHIS@hotmail.com> wrote in message news:eMVrrcJhJHA.3444@TK2MSFTNGP03.phx.gbl...<span style="color:blue"> > Actually the battery only is used when the computer is powered off and > disconnected from the mains (unless the technology has changed over the years). > > There is always power to the M/B (a trickle charge so to speak) when the computer > is plugged in. Notice that there are LED's on the M/B that are powered on at all > times - even when the computer is turned off. > > If there is power to the M/B the battery is not used. > > If I am wrong, please correct me. (-: > > -- > > Richard Urban > Microsoft MVP > Windows Desktop Experience > > > "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message > news:8ms9o49u9v2rc67rbjr6eoce322c0a0lgr@4ax.com...<span style="color:green"> >> On Sat, 31 Jan 2009 20:22:55 -0000, "spud" <spud@yahoo.com> wrote: >><span style="color:darkred"> >>> Desktop 6 months old and time gone haywire today.Updated it a number of >>> times but keeps going slow> >>> >>> Cmos battery??</span> >> >> >> >> There's no way to answer that for sure without more info from you. >> >> Before anyone whose clock is running slow rushes out to buy a new >> battery, he should first take note of whether he is losing time while >> the computer is running or while it's powered off. If it's while >> powered off, the problem is very likely the battery. But if it's >> while running, it can not be the battery, because the battery isn't >> used while the computer is running. >> >> If the clock loses time while running, try this: >> >> Open a command prompt window (Start | Run | cmd) and enter the >> following commands: >> >> net stop w32time >> w32tm /unregister >> w32tm /register >> net start w32time >> >> >> -- >> Ken Blake, Microsoft MVP - Windows Desktop Experience >> Please Reply to the Newsgroup</span> > </span> Quote
Guest DDW Posted February 2, 2009 Posted February 2, 2009 On Sun, 1 Feb 2009 18:26:23 -0500, "Peter Foldes" <okf122@hotmail.com> wrote: <span style="color:blue"> >Richard > >The time is always dependent on the CMOS battery. It runs on that computer open or >not</span> No. Time is independent of the CMOS clock/battery when Windows is running. DDW -- Reply via this group No email please Quote
Guest Richard Urban Posted February 2, 2009 Posted February 2, 2009 I can physically remove the battery (and have done so for an extended test of 48 hours) and my desktop tower retains correct time. -- Richard Urban Microsoft MVP Windows Desktop Experience "Peter Foldes" <okf122@hotmail.com> wrote in message news:%23QriBSMhJHA.3380@TK2MSFTNGP04.phx.gbl...<span style="color:blue"> > Richard > > The time is always dependent on the CMOS battery. It runs on that computer > open or not > > -- > Peter > > Please Reply to Newsgroup for the benefit of others > Requests for assistance by email can not and will not be acknowledged. > > "Richard Urban" <richardurbanREMOVETHIS@hotmail.com> wrote in message > news:eMVrrcJhJHA.3444@TK2MSFTNGP03.phx.gbl...<span style="color:green"> >> Actually the battery only is used when the computer is powered off and >> disconnected from the mains (unless the technology has changed over the >> years). >> >> There is always power to the M/B (a trickle charge so to speak) when the >> computer is plugged in. Notice that there are LED's on the M/B that are >> powered on at all times - even when the computer is turned off. >> >> If there is power to the M/B the battery is not used. >> >> If I am wrong, please correct me. (-: >> >> -- >> >> Richard Urban >> Microsoft MVP >> Windows Desktop Experience >> >> >> "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote in message >> news:8ms9o49u9v2rc67rbjr6eoce322c0a0lgr@4ax.com...<span style="color:darkred"> >>> On Sat, 31 Jan 2009 20:22:55 -0000, "spud" <spud@yahoo.com> wrote: >>> >>>> Desktop 6 months old and time gone haywire today.Updated it a number >>>> of >>>> times but keeps going slow> >>>> >>>> Cmos battery?? >>> >>> >>> >>> There's no way to answer that for sure without more info from you. >>> >>> Before anyone whose clock is running slow rushes out to buy a new >>> battery, he should first take note of whether he is losing time while >>> the computer is running or while it's powered off. If it's while >>> powered off, the problem is very likely the battery. But if it's >>> while running, it can not be the battery, because the battery isn't >>> used while the computer is running. >>> >>> If the clock loses time while running, try this: >>> >>> Open a command prompt window (Start | Run | cmd) and enter the >>> following commands: >>> >>> net stop w32time >>> w32tm /unregister >>> w32tm /register >>> net start w32time >>> >>> >>> -- >>> Ken Blake, Microsoft MVP - Windows Desktop Experience >>> Please Reply to the Newsgroup</span> >></span> > </span> Quote
Guest DDW Posted February 2, 2009 Posted February 2, 2009 On Sun, 1 Feb 2009 20:48:46 -0500, "Richard Urban" <richardurbanREMOVETHIS@hotmail.com> wrote: <span style="color:blue"> >I can physically remove the battery (and have done so for an extended test >of 48 hours) and my desktop tower retains correct time.</span> As it should. Here is a long article about Windows timekeeping. http://blogs.msdn.com/w32time/default.aspx Toward the end is a general discussion (Tale of Two Clocks) that should show any rational person why the CMOS battery and clock is not the reason for time being lost when Windows is running. DDW -- Reply via this group No email please Quote
Guest Ken Blake, MVP Posted February 2, 2009 Posted February 2, 2009 On Sun, 1 Feb 2009 20:48:46 -0500, "Richard Urban" <richardurbanREMOVETHIS@hotmail.com> wrote: <span style="color:blue"> > I can physically remove the battery (and have done so for an extended test > of 48 hours) and my desktop tower retains correct time.</span> Is that 48 hours while the computer is running or not running? -- Ken Blake, Microsoft MVP - Windows Desktop Experience Please Reply to the Newsgroup Quote
Guest DDW Posted February 2, 2009 Posted February 2, 2009 On Mon, 02 Feb 2009 11:01:24 -0700, "Ken Blake, MVP" <kblake@this.is.an.invalid.domain> wrote: <span style="color:blue"> >On Sun, 1 Feb 2009 20:48:46 -0500, "Richard Urban" ><richardurbanREMOVETHIS@hotmail.com> wrote: ><span style="color:green"> >> I can physically remove the battery (and have done so for an extended test >> of 48 hours) and my desktop tower retains correct time.</span> > > >Is that 48 hours while the computer is running or not running?</span> Please. We're talking about Windows time. DDW -- Reply via this group No email please Quote
Guest Dave Warren Posted February 2, 2009 Posted February 2, 2009 In message <q7eeo49be0mbag1fqqre46jascbims8lhe@4ax.com> DDW <dd.wright@KILLSPAMcomcast.net> was claimed to have wrote: <span style="color:blue"> >On Mon, 02 Feb 2009 11:01:24 -0700, "Ken Blake, MVP" ><kblake@this.is.an.invalid.domain> wrote: ><span style="color:green"> >>On Sun, 1 Feb 2009 20:48:46 -0500, "Richard Urban" >><richardurbanREMOVETHIS@hotmail.com> wrote: >><span style="color:darkred"> >>> I can physically remove the battery (and have done so for an extended test >>> of 48 hours) and my desktop tower retains correct time.</span> >> >> >>Is that 48 hours while the computer is running or not running?</span> > >Please. > >We're talking about Windows time.</span> If the computer is running then the battery isn't used even for the CMOS clock. In most cases, if the computer is plugged in the 5V standby current runs the clock, so the battery is only relevant when the computer is completely unplugged or the power supply switch is off. Quote
Guest DDW Posted February 2, 2009 Posted February 2, 2009 On Mon, 02 Feb 2009 11:04:17 -0800, Dave Warren <dave-usenet@djwcomputers.com> wrote: <span style="color:blue"> >In message <q7eeo49be0mbag1fqqre46jascbims8lhe@4ax.com> DDW ><dd.wright@KILLSPAMcomcast.net> was claimed to have wrote: ><span style="color:green"> >>On Mon, 02 Feb 2009 11:01:24 -0700, "Ken Blake, MVP" >><kblake@this.is.an.invalid.domain> wrote: >><span style="color:darkred"> >>>On Sun, 1 Feb 2009 20:48:46 -0500, "Richard Urban" >>><richardurbanREMOVETHIS@hotmail.com> wrote: >>> >>>> I can physically remove the battery (and have done so for an extended test >>>> of 48 hours) and my desktop tower retains correct time. >>> >>> >>>Is that 48 hours while the computer is running or not running?</span> >> >>Please. >> >>We're talking about Windows time.</span> > >If the computer is running then the battery isn't used even for the CMOS >clock. > >In most cases, if the computer is plugged in the 5V standby current runs >the clock, so the battery is only relevant when the computer is >completely unplugged or the power supply switch is off.</span> I believe that's already been established in prior posts. But... maybe one more will help shut down the folks who reflexively suggest changing the CMOS battery to fix Windows losing time while it's running. Maybe. They're a thick-skulled bunch. DDW -- Reply via this group No email please Quote
Guest Dave Warren Posted February 3, 2009 Posted February 3, 2009 In message <2gmeo4l6p9ht44eeehjipip4c8pt9fd34u@4ax.com> DDW <dd.wright@KILLSPAMcomcast.net> was claimed to have wrote: <span style="color:blue"> >I believe that's already been established in prior posts.</span> Gah, yeah. I meant to attach my reply elsewhere in the thread. <span style="color:blue"> >But... maybe one more will help shut down the folks who reflexively >suggest changing the CMOS battery to fix Windows losing time while >it's running.</span> And that's why. Quote
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