Some years ago I had an IBM ThinkPad that one day failed to boot, and every subsystem diagnostic that ran at power-up (keyboard, memory, disk controller, ...) reported a problem. On a whim I put in a new clock battery and everything was fine. Now any time a machine suddenly goes flakey, the clock battery is the first thing that gets replaced.
On Fri, May 26, 2017 at 21:22:17 +0930,Tim wrote: > On Thu, 2017-05-25 at 12:47 -0700, Rick Stevens wrote: > > Otherwise, with a weak battery the BIOS will usually revert to default > > settings which are generally considered conservative and "safe". > > I'm not so sure that's the case. In many PCs, the BIOS clock, BIOS > memory, and perhaps other BIOS hardware, are powered solely by the > battery (even when the computer is running off mains power). So, with > failing power you could have all manner of random things happen. >
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