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mpm up2000 cmos battery low fix needed

mpm up2000 cmos battery low fix needed

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boots with cmos battery low message. I do not see a battery ... - Apr 03, 2024 by ddfreeze

You have to enter the setup utility.Power off the machine,co... - Apr 03, 2024 by hta1979

... - Apr 03, 2024 by hta1979

thank you so much for the info, wished I would have known pr... - Apr 05, 2024 by ddfreeze

My research taught me that most older 486 motherboards have ... - Apr 05, 2024 by ddfreeze

the F1 bios menu thing did not work no matter what options I... - Apr 05, 2024 by ddfreeze

I'm glad it was successful. According to them, the cmos sett... - Apr 05, 2024 by hta1979

I'd say it's much easier to do the external batter mod than ... - Apr 07, 2024 by Adam_C

ddfreeze

#90803

mpm up2000 cmos battery low fix needed | 3 April, 2024

boots with cmos battery low message. I do not see a battery anywhere to replace. F1 utility does not seem to work. hard drive is good. do not have an A: boot disk

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hta1979

#90805

mpm up2000 cmos battery low fix needed | 3 April, 2024

You have to enter the setup utility.Power off the machine,connect AT keyboard to the rear port, power on,press f1, load the bios setup defaults, enter the hdd parameters,in the first menu (Standard CMOS setup) (Cylinder,Head,Sector,Wprecomp) save the data, reboot machine.

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hta1979

#90810

mpm up2000 cmos battery low fix needed | 3 April, 2024

Attachments:

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ddfreeze

#90826

mpm up2000 cmos battery low fix needed | 5 April, 2024

thank you so much for the info, wished I would have known previously, however I found the motherboard manual online, and located the Dallas CMOS chip soldered to the board. Found a lot of youtube fixes online. Dremel tool and some soldering, added another batery.

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ddfreeze

#90827

mpm up2000 cmos battery low fix needed | 5 April, 2024

My research taught me that most older 486 motherboards have a similar CMOS substitution chip that you can purchase, or modify the one you have with a battery as shown.

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ddfreeze

#90828

mpm up2000 cmos battery low fix needed | 5 April, 2024

the F1 bios menu thing did not work no matter what options I chose. The fix is to do the mod to the CMOS chip, or gamble on a substitute replacement.

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hta1979

#90831

mpm up2000 cmos battery low fix needed | 5 April, 2024

I'm glad it was successful. According to them, the cmos setting was preserved. If the battery is completely discharged, it must be restored to the original state. The setup menu should work, but then there was no need for it.

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Adam_C

#90838

mpm up2000 cmos battery low fix needed | 7 April, 2024

I'd say it's much easier to do the external batter mod than replace the whole Dallas module. I've done it, works fine. There is a chip in the socket next to the module, best to remove it and put back when you finish with the mod.

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