Had a conversation with a customer today, where I noted that the CMOS battery on one of their PCs in the warehouse has a 'low battery' warning on boot up.
It is a Dell and you can press F1 to bypass / acknowledge the warning, and continue to boot up the OS.
I said they should replace the battery or the machine, to which I was asked, 'Why - what are the implications?'
I said that the battery allowed the machine to keep track of time while powered off, to which the customer noted that when the machine boots up it gets it time from time.windows.com or ntp.org or wherever, so why does it matter. The machine is not domain joined, so any implications from that are not applicable.
I didn't have a reply!
Is there any implication to just leaving the machine as it is other than having to press F1 after it boots (which does mean if it automatically updates, then it won't reboot into the OS, but will get stuck on 'Press F1').
Also, if there are no significant implications, does anyone know if we can change a setting somewhere (BIOS perhaps) to disable that warning? I did have a look, but nothing jumped out at me.