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#11
I haven't made any BIOS changes, so it sounds like I wouldn't have much to do after all. That's great to know. I've always heard that resetting BIOS after a CMOS failure was a big headache. I guess most people make changes, and that's probably why it ends up being so difficult after a failure.
Mine is a laptop, so that's good news for me.
I have a thermostat in my house that runs on 2AA batteries and I found that the display stays on and settings are maintained for around 10 seconds after I remove the batteries. When I do a battery change for it, I try to put in the new batteries within 10 seconds so as not to lose the thermostat's settings. I thought maybe the CMOS battery in my laptop might work similarly.
Interesting!
I just did a Google search for how long a CMOS battery lasts and came up with all kinds of answers. 2-10 years, 3-5 years, one that said up to 20 years.
And then I found on hp.com what doesn't sound right at all. They claim the CMOS battery gets recharged when the computer is plugged in. Uh, no it doesn't. Even I know that! Here is what they said: "The CMOS battery gets charged whenever your laptop is plugged in. It’s only when your laptop is unplugged that the battery loses charge. Most batteries will last 2 to 10 years from the date they’re manufactured. The more you leave your laptop plugged in, the longer your battery will last."