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#1
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Flat CMOS battery?
My Mum moved house last year (Sept) and her desktop PC has been out of
use since then (about 4 - 5 months). PC is about 3 1/2 years old IIRC. Got it back up and running yesterday and when it booted up it came it with the BIOS setup screen and the date had been reset to something like 2002. after saving the CMOS settings and resetting the date it would boot up, and did so ok 2-3 more times while I was there. today she turned it on and it came up with the BIOS screen again. Am I right in assuming the CMOS battery is lacking in charge? Do these things recharge when it's turned on, or will it more likely need replacing? -- Chris French, Leeds |
#2
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Flat CMOS battery?
"Chris French" wrote in message ... My Mum moved house last year (Sept) and her desktop PC has been out of use since then (about 4 - 5 months). PC is about 3 1/2 years old IIRC. snipped Am I right in assuming the CMOS battery is lacking in charge? Do these things recharge when it's turned on, or will it more likely need replacing? Sounds very likely Chris. If it`s a standard disc type battery, you can get them in ASDA or Tesco now, on their battery displays. -- bw..OJ |
#3
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Flat CMOS battery?
today she turned it on and it came up with the BIOS screen again.
Am I right in assuming the CMOS battery is lacking in charge? Do these things recharge when it's turned on, or will it more likely need replacing? Very few PC's have every actually recharged the CMOS battery, and that was years ago. Just take the battery to your local battery shop. It should be a common replacement. |
#4
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Flat CMOS battery?
In message _b2Gf.354982$tl.207063@pd7tw3no, Noozer
writes today she turned it on and it came up with the BIOS screen again. Am I right in assuming the CMOS battery is lacking in charge? Do these things recharge when it's turned on, or will it more likely need replacing? Very few PC's have every actually recharged the CMOS battery, and that was years ago. Just take the battery to your local battery shop. It should be a common replacement. Ok, thanks for the confirmation. -- Chris French, Leeds |
#5
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Flat CMOS battery?
On Tue, 7 Feb 2006 13:55:22 +0000 One man come in the name of truth
Chris French sent this : My Mum moved house last year (Sept) and her desktop PC has been out of use since then (about 4 - 5 months). PC is about 3 1/2 years old IIRC. Got it back up and running yesterday and when it booted up it came it with the BIOS setup screen and the date had been reset to something like 2002. after saving the CMOS settings and resetting the date it would boot up, and did so ok 2-3 more times while I was there. today she turned it on and it came up with the BIOS screen again. Am I right in assuming the CMOS battery is lacking in charge? Do these things recharge when it's turned on, or will it more likely need replacing? Yes they do re-charge.There is a residual current applied across the CMOS to keep the battery healthy.This can be checked using a Multi-meter.As these batteries are,"Lithium"based they can handle a certain amount of re-charging.However if the unit has been stored there is a dis-charge point after usage where they may not be re-charged. They are cheap to replace. HTH -- Free Windows/PC help, http://www.geocities.com/sheppola/trouble.html http://www.soundclick.com/bands/page...m?bandID=88558 |
#6
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Flat CMOS battery?
After a number of years, these batteries need to be replaced. They are not
very expensive. Jerry G. -- "Chris French" wrote in message ... My Mum moved house last year (Sept) and her desktop PC has been out of use since then (about 4 - 5 months). PC is about 3 1/2 years old IIRC. Got it back up and running yesterday and when it booted up it came it with the BIOS setup screen and the date had been reset to something like 2002. after saving the CMOS settings and resetting the date it would boot up, and did so ok 2-3 more times while I was there. today she turned it on and it came up with the BIOS screen again. Am I right in assuming the CMOS battery is lacking in charge? Do these things recharge when it's turned on, or will it more likely need replacing? -- Chris French, Leeds |
#7
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Flat CMOS battery?
Will mention my saga.
The hard drive would'nt boot, "Disc failure Please insert disk" was all I got apart from the POST bios beep as if the HDD was duff or OS corrupted. Would'nt let me do a restore, re-pair in stall or I complete format, trying another HDD was still same. I re-booted bios and all was well, the HDD was asking for the CD so that it could install the 2nd half of the installation. I replaced the bios battery the old one being down to 2.5V.. Note: never use a analogue meter to measure these or they'll soon be 'flat' always use a digital meter as they have a high-input impedance. I did a complete reformat after changing the bios battery - just incase of any corrupted data. Now the reason for the story. All the bios settings was OK and normal except the 5V 30Amp supply which was reading 4.3V (some drop for a 30 Amp rail), the time and date being OK, a bios reboot and a battery change brought the 5V rail back to normal along with HDD boot....! I would have thought the bios would have 'locked up or reverted back to the default settings but it did'nt. All in all I did not need to do a re format ....."blast...." Davy |
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