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| Thread ID: 41223 | 2004-01-03 22:48:00 | Computer clock constantly losing time. | Wilky (776) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 205110 | 2004-01-03 22:48:00 | This is starting to get annoying. My computer clock loses about 5 minutes each day, so I am forced to constantly run atomic clock sync to get it back to the right time. This shouldn't be happening, since I leave my computer on 24/7 ever since my CMOS battery ran out and the computer refused to boot. (also cause I'm too impatient to wait half an hour while the old clunker boots up) This has only started happening, and it's REALLY bad. Can anyone help? Thanks. |
Wilky (776) | ||
| 205111 | 2004-01-03 22:53:00 | I suggest you better think about replacing the CMOS battery. | stu140103 (137) | ||
| 205112 | 2004-01-03 23:01:00 | I thought the CMOS battery only kept the time when the computer was switched off? | Wilky (776) | ||
| 205113 | 2004-01-03 23:32:00 | I have no idea why your machine is loosing time at that rate - computers are (supposedly) notorious for keeping time but loosing 5 minutes a day is a huge loss even for a computer. However, you say that you keep your machine turned on 24/7 because of your CMOS battery - so you could put a task in the Task Scheduler to run at a set time every day which would automatically update your systems time for you meaning you don't have to manually go and do it youself? What OS are you using? CyberChuck |
cyberchuck (173) | ||
| 205114 | 2004-01-03 23:36:00 | true so far, but if the cmos clock loses time while pc is switched off, then when you turn the pc on again the Windows clock will be wrong as the operating system refences the cmos clock, in other words the windows clock uses the CMOS clock to get the time from |
beama (111) | ||
| 205115 | 2004-01-03 23:58:00 | Not only that beama, but if the cmos cell is flat or not there then the real time crystal clock will not be working, and if the computer is just left on, then only the windows clock is keeping time by software. That will not be very accurate at all. Only old computers with soldered in batteries used power to re-charge the battery. If those batteries went down a bit, then for a while they would come back up with power on and the xtal clock run ok until the power went off, for a while anyway. |
Terry Porritt (14) | ||
| 205116 | 2004-01-04 01:07:00 | That's the strength of it . ;-) I have an idea that the crystal clock should get power from the main PSU when it's on, but if so it would be fed through a diode, so it would be at a lower than normal voltage . The OS time is loaded from that clock only at boot time . At all other times, the OS's time is manitained by an 18 . 7 Hz interrupt . That relies on getting all those interrupts (which is not always guaranteed) and the actual rate of whatever system clock that interrupt is derived from . Why not replace the button cell? |
Graham L (2) | ||
| 205117 | 2004-01-04 05:27:00 | . . . I'm confused now . I use windows 98SE, and it seems to lose minutes randomly, not at a steady rate, since all day the time has been fine, but it lost 5 minutes from yesterday to this morning . I hate Windows . |
Wilky (776) | ||
| 205118 | 2004-01-04 09:36:00 | Yeah my cpu clock loses or gains time. It unbelievable but my computer clock (circa 2002) is not as accurate as Captain Cooks chronometers (wind up clocks I think) for navigation in the 1770s. If he had the clock from my stupid AMD 1200 computer onboard Endeavour he would have been in deep doo doos. Funny thing my old 386 SX kept near perfect time. Tedheath |
tedheath (537) | ||
| 205119 | 2004-01-04 11:06:00 | >computers are (supposedly) notorious for Bad keeping time | mikebartnz (21) | ||
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