- #1
PainterGuy
- 940
- 69
- TL;DR Summary
- battery failure in a CMOS BIOS and restoring the BIOS settings
Hi,
I was reading about CMOS BIOS which was once used in computers to store BIOS settings is a CMOS RAM using a battery backup.
This article, https://www.makeuseof.com/tag/why-does-my-motherboard-have-a-battery/, says, "If the battery fails on an older computer that stores its BIOS settings in CMOS, you’ll see error messages like “CMOS Battery Failure”, “CMOS Read Error”, or “CMOS Checksum Error” when you start the computer. You may also see more cryptic error messages, like “New CPU Installed” – the motherboard can’t remember that the CPU was installed previously, so it thinks it’s new every time you boot your computer."
If the battery fails, it'd mean losing all the BIOS settings which in turn means that a computer hardware would no longer be able to make heads or tails of anything. Unless there is a backup copy of BIOS settings, I don't think replacing a battery would restore the BIOS. But I have been to some other online sources which suggest that replacing a battery would fix the problem. Could you please guide me on this? Thank you!
I was reading about CMOS BIOS which was once used in computers to store BIOS settings is a CMOS RAM using a battery backup.
This article, https://www.makeuseof.com/tag/why-does-my-motherboard-have-a-battery/, says, "If the battery fails on an older computer that stores its BIOS settings in CMOS, you’ll see error messages like “CMOS Battery Failure”, “CMOS Read Error”, or “CMOS Checksum Error” when you start the computer. You may also see more cryptic error messages, like “New CPU Installed” – the motherboard can’t remember that the CPU was installed previously, so it thinks it’s new every time you boot your computer."
If the battery fails, it'd mean losing all the BIOS settings which in turn means that a computer hardware would no longer be able to make heads or tails of anything. Unless there is a backup copy of BIOS settings, I don't think replacing a battery would restore the BIOS. But I have been to some other online sources which suggest that replacing a battery would fix the problem. Could you please guide me on this? Thank you!