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Computer Help and Support

Thor_MN

(11,843 posts)

19. To do intelligent charging, the computer has to know what "Zero volts" is.

Reply to left-of-center2012 (Original post)

Tue Nov 21, 2017, 11:42 AM

Nov 2017

The circuit can get confused and think the fully charged battery is "zero volts" and refuse to start.

The procedure you did was to remove (almost) all power and tell the computer, hey >THIS< is zero volts. Once reset, it's back to normal, until the reference point drifts again. Lots of laptops are discarded because "It won't charge" are actually in this situation.

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How (why) did this work? [View all] left-of-center2012 Nov 2017 OP

It was futzed. You had to unfutz it. n/t PoliticAverse Nov 2017 #1

(...having a bad-chip day.............) lastlib Nov 2017 #17

A guess canetoad Nov 2017 #2

"may have been stuck in hibernation or stand-by" left-of-center2012 Nov 2017 #8

It ran out of power in hibernation or just got stuck in hibernation Egnever Nov 2017 #9

"It ran out of power in hibernation" left-of-center2012 Nov 2017 #10

Or got stuck in hibernation Egnever Nov 2017 #14

I think that is what I had to do with my BigmanPigman Nov 2017 #3

I had to do that with my husbands desktop one time, only with no battery shraby Nov 2017 #4

Have had similar experiences... but who knows why taking the battery out and bagelsforbreakfast Nov 2017 #5

There are reasons. earthshine Nov 2017 #11

"The batteries have programmed chips. " Thanks - would not have guessed at bagelsforbreakfast Nov 2017 #12

I had one of my work laptops do something similar. I had accidentally let it unplug behind and not brewens Nov 2017 #6

It did not need 'charging' left-of-center2012 Nov 2017 #7

Call the manufacturer and ask them emulatorloo Nov 2017 #13

From the HP site: billh58 Nov 2017 #15

Excellent. Thank you left-of-center2012 Nov 2017 #16

Is its name "HAL", by any chance??...? lastlib Nov 2017 #18

To do intelligent charging, the computer has to know what "Zero volts" is. Thor_MN Nov 2017 #19