I have read in a few forums where opinions split.
Some, or most, say that an empty or defective battery only affects information or software, not hardware (except, of course, CMOS RAM).
Others say it can affect the hardware (except the CMOS RAM).
And yes, I will not care what the answer is, definitely buy a new one. But I'm very interested in the question, even if I myself was not affected.
Without a CMOS battery, when the PC is completely turned off, it can't retain some information, so each time it is turned off, for example. The time must reset.
Otherwise, there's no influence on the boat or the function.
It's about the boot process. The PC does not start or does not power up. Can an empty or defective CMOS battery affect the boot process?
Indirectly. Without a CMOS battery, the PC loses its CMOS information. In CMOS, however, in particular the start information, e.g. From which drive should be started. The PC then starts partially. That There's some error message. If you set the values in the CMOS correctly again, then the computer starts up.
As can be seen from the Wikipedia article, a dead battery has the consequence that stored data about the BIOS parameters and the time are lost. Of course, this can make sure that the laptop does not start, but does not have to. If the default values are also ok, then he can start with them as well.
It has an effect on the hardware in that the memory loses data, but that does not damage it in any way. Whether one describes such a loss of data as hardware or software problem, here is the actual point.
For me, it does not start at all, it does not start the fan, it does not sound like a drive or it lights up an LED.
I know that of course this can be triggered by another broken piece of hardware and I should not limit myself to the CMOS battery.
But could an empty or defective CMOS battery not let the PC start up at all or leave it in the off state?
No. The PC starts (in my experience) normal, just at the beginning with the error message that the time was reset and you should enter this again.
First, thanks for your answer.
As you can see from the Wikipedia article…
Wikipedia does not know everything. The site is only as well versed as the authors of the article were.
a dead battery has the consequence that stored data about the BIOS parameters and the time will be lost. Of course this can again make sure that the laptop does not start.
Why?
If the default values are also ok, then he can start with them as well.
What are these default values and in which component are they included?
It has an impact on the hardware in that the memory loses data,
I know that.
but that does not damage him in any way.
I did not question that either.
Whether one describes such a loss of data as hardware or software problem, here is the actual point.
No, that has nothing to do with my question. It's not about grading the data loss of CMOS RAM as a hardware or software problem.
With pleasure. As I said, my opinion is that based on your situation mentioned in general can't draw conclusions about whether the laptop now starts or not.
Wikipedia does not know everything. The site is only as well versed as the authors of the article were.
For Opinion articles, I fully agree. In terms of technique and facts, it is one of the better sources, if not, in general, the best, since there are both several authors, and that the literature is cited, but I have these not at hand.
Why?
Because the memory is volatile, i. Without electricity loses its data.
What are these default values and in which component are they included?
The default values vary from PC to PC, so I can't make a general statement. They are contained in a non-volatile ROM (read-only memory), so you can't write in any data, otherwise you would not have the problem with the battery.
Some, or most, say that an empty or defective battery only affects information or software, not the hardware.
No, this statement does not contribute to the question at all.
Thank you, Now again I:-)
The
Why?
referred to exactly why losing the stored data via the BIOS parameters and the clock, can make sure that the PC or laptop does not start and by that I mean starting, not booting.
Here again your text, since you do not have to scroll with:
a dead battery has the consequence that stored data about the BIOS parameters and the time will be lost. Of course this can again make sure that the laptop does not start.
Most of the time you can choose "LOAD BIOS DEFAULTS" or the like to get the computer up and running again.
I would not completely rule out that nothing happens with an empty CMOS battery, but I think it's very, very unlikely.
Could it be that you have a lightning strike near you? This sometimes leads to damage to individual hardware parts, in my experience even behind a (admittedly cheap) overvoltage filter.
Oh.
As mentioned below, the boot drive is basically saved, without which no operating system can be loaded. However, the interface standard for the SATA controllers (these are often IDE / AHCI / RAID) is also widespread as an error. In addition, there are of course many more settings, especially for more expensive motherboards, which can ensure that something does not work when booting.
In general, settings that prevent booting are usually those that have to do with the data carriers. The default clock settings, both RAM and CPU, should not normally cause errors.
If it does not change anything in the settings, then it may well be that the PC boots despite data loss, as the default settings are still compatible. As a concrete example, where the default settings would not work, would be with most motherboards a subsequent installation of a M.2 SSD.
The time is nowadays rarely a problem and was only incidentally noted. Nevertheless, there are still some services online, which require a correct time. As for that, I know but rather less.
Start, boot, that's a bit confused, that's why I replaced it now. If you start with, the 'display on the monitor' mean, this should have nothing to do with the BIOS, as long as the hardware is not defective.
That means you can 'start' unrestrictedly. But limited boot.
