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| Thread ID: 136129 | 2014-01-22 08:46:00 | HP desktop PC - losing system clock | Nomad (952) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 1365812 | 2014-01-22 08:46:00 | I have tried a different clock battery . An old computer, nearly 10yrs I suppose . This battery works in my own PC fine . What happens is that it does the full RAM check and says configuration was not saved previously ie HDD layout and clock / date . You set them . Start Windows, great . You then shutdown and turn off the power at the wall . Start up again and it loses it again . If you shutdown but didn't power down at the wall it is fine . Also on this machine if you just turn it on at at the wall without pressing the power button on the PC case it will start up by itself . . . Cheers . |
Nomad (952) | ||
| 1365813 | 2014-01-22 08:49:00 | Did the system reboot after you set them initially? and had the setting stuck? | SolMiester (139) | ||
| 1365814 | 2014-01-22 08:52:00 | See if wake up on LAN is enabled in the BIOS. If its on a network. That can wake / turn it on. And if it's like an ASUS some mobos if it's got a wired keyboard will turn the system on, if the option is enabled in the BIOS | Speedy Gonzales (78) | ||
| 1365815 | 2014-01-22 08:52:00 | After I set the date / time I chose save and exit or something on that line. It rebooted and started up Windows fine. When I shutdown Windows and turn off at the wall. Turn on and it goes thru the RAM check again and says the clock / date issue. If I don't set the date / time and I get into Windows it (Windows) willl let me know that it is having some issues with the system clock .... |
Nomad (952) | ||
| 1365816 | 2014-01-22 09:38:00 | Seems there isn't enough juice in the battery to keep the BIOS on this board set. | SolMiester (139) | ||
| 1365817 | 2014-01-22 09:44:00 | On my 5yr old pc I use that battery onto this old pc and it doesn't work. .. I took the old pc's battery and put on my pc and it works. ... | Nomad (952) | ||
| 1365818 | 2014-01-22 13:46:00 | I have a number of these HP desktop machines, worked on many more, and all of them power up and run if you switch the mains on with no need to press the pwr button. It never occurred to me that this might be configurable in the bios, I will check and report back if I remember to try this tomorrow. I just took it as normal behaviour for this type of machine, small flat console models, ex business desktop machines. |
zqwerty (97) | ||
| 1365819 | 2014-01-22 18:57:00 | Some mobos have jumpers near the battery. And you have to make sure it's on the right pin/s. If it isn't there, the BIOS wont keep its settings. Maybe someone removed it?? | Speedy Gonzales (78) | ||
| 1365820 | 2014-01-22 20:01:00 | I had one of those low profile HP flat on the desk PCs with that cmos battery problem, turned out the battery was not making electrical contact with the battery holder. I found it by metering the battery voltage across the motherboard connections away from the holder. | jinja_thom (4306) | ||
| 1365821 | 2014-01-22 21:12:00 | Yes, Speedy is correct it is a bios setting. Namely, on power failure, at resumption of power, stay off or return to previous state. It seems that they are all set to resume previous state, I have just set two of them to remain off at resumption of power and now they do. Thanks again Speedy. |
zqwerty (97) | ||
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